diff --git a/src/main/kotlin/dev/usbharu/activitystreams/impl/builder/JsonLdBuilder.kt b/src/main/kotlin/dev/usbharu/activitystreams/impl/builder/JsonLdBuilder.kt
index 23c0103..fe1702c 100644
--- a/src/main/kotlin/dev/usbharu/activitystreams/impl/builder/JsonLdBuilder.kt
+++ b/src/main/kotlin/dev/usbharu/activitystreams/impl/builder/JsonLdBuilder.kt
@@ -1,12 +1,13 @@
 package dev.usbharu.activitystreams.impl.builder
 
+import dev.usbharu.activitystreams.impl.type.AbstractJsonObjectBuilder
 import dev.usbharu.activitystreams.impl.type.BuilderContext
 import dev.usbharu.activitystreams.impl.type.JsonObjectBuilder
 import dev.usbharu.activitystreams.model.JsonLd
 import java.net.URI
 
-open class JsonLdBuilder : JsonObjectBuilder<JsonLd> {
-    override fun build(t: JsonLd, jsonObject: Map<String, Any>, builderContext: BuilderContext) {
+open class JsonLdBuilder : AbstractJsonObjectBuilder<JsonLd>() {
+    override fun internalBuild(t: JsonLd, jsonObject: Map<String, Any>, builderContext: BuilderContext) {
         t.value = jsonObject["@value"]
         t.id = jsonObject["@id"]?.toString()?.let { URI.create(it) }
         t.type = (jsonObject["@type"] as? List<String>).orEmpty().map { URI.create(it) }
diff --git a/src/main/kotlin/dev/usbharu/activitystreams/impl/builder/ObjectBuilder.kt b/src/main/kotlin/dev/usbharu/activitystreams/impl/builder/ObjectBuilder.kt
index c8068d3..468f29d 100644
--- a/src/main/kotlin/dev/usbharu/activitystreams/impl/builder/ObjectBuilder.kt
+++ b/src/main/kotlin/dev/usbharu/activitystreams/impl/builder/ObjectBuilder.kt
@@ -1,13 +1,23 @@
 package dev.usbharu.activitystreams.impl.builder
 
+import dev.usbharu.activitystreams.impl.type.AbstractJsonObjectBuilder
 import dev.usbharu.activitystreams.impl.type.BuilderContext
 import dev.usbharu.activitystreams.impl.type.JsonObjectBuilder
 import dev.usbharu.activitystreams.model.JsonLd
 import dev.usbharu.activitystreams.model.core.Object
+import dev.usbharu.activitystreams.model.other.LangString
+import java.net.URI
 
-class ObjectBuilder : JsonObjectBuilder<Object> {
+open class ObjectBuilder : AbstractJsonObjectBuilder<Object>() {
     override fun build(t: Object, jsonObject: Map<String, Any>, builderContext: BuilderContext) {
 //        t.name =
     }
 
+    override fun internalBuild(t: Object, jsonObject: Map<String, Any>, builderContext: BuilderContext) {
+        val langString = builderContext.typeFactory().factory(URI.create("")) as LangString
+        builderContext.getBuilder(LangString::class.java)
+            .build(langString, jsonObject["https://www.w3.org/ns/activitystreams#name"], builderContext)
+        t.name =
+    }
+
 }
\ No newline at end of file
diff --git a/src/main/kotlin/dev/usbharu/activitystreams/impl/model/other/LangStringImpl.kt b/src/main/kotlin/dev/usbharu/activitystreams/impl/model/other/LangStringImpl.kt
index 56b9c81..b84b066 100644
--- a/src/main/kotlin/dev/usbharu/activitystreams/impl/model/other/LangStringImpl.kt
+++ b/src/main/kotlin/dev/usbharu/activitystreams/impl/model/other/LangStringImpl.kt
@@ -1,10 +1,16 @@
 package dev.usbharu.activitystreams.impl.model.other
 
 import dev.usbharu.activitystreams.model.other.LangString
+import java.net.URI
 import java.util.*
 
-class LangStringImpl(private val value: String?, private val map: Map<String, String>) : LangString {
-    override fun getValue(): String? = value
+class LangStringImpl(
+    override var value: Any?,
+    private val map: Map<String, String>,
+    override var type: List<URI> = emptyList(),
+    override var id: URI? = null
+) : LangString {
+    override fun getValue(): String? = value?.toString()
 
     override fun getValueByLanguageTag(locale: Locale): String? = map[locale.toLanguageTag()]
 
diff --git a/src/main/kotlin/dev/usbharu/activitystreams/impl/type/AbstractJsonObjectBuilder.kt b/src/main/kotlin/dev/usbharu/activitystreams/impl/type/AbstractJsonObjectBuilder.kt
new file mode 100644
index 0000000..2bf5f31
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/activitystreams/impl/type/AbstractJsonObjectBuilder.kt
@@ -0,0 +1,12 @@
+package dev.usbharu.activitystreams.impl.type
+
+abstract class AbstractJsonObjectBuilder<T : Any> : JsonObjectBuilder<T> {
+    override fun build(t: T, jsonObject: Map<String, Any>, builderContext: BuilderContext) {
+        val superclass = t.javaClass.superclass
+        if (superclass != Any::class.java) {
+            builderContext.getBuilder<T>(superclass).build(t, jsonObject, builderContext)
+        }
+    }
+
+    protected abstract fun internalBuild(t: T, jsonObject: Map<String, Any>, builderContext: BuilderContext)
+}
\ No newline at end of file
diff --git a/src/main/kotlin/dev/usbharu/activitystreams/impl/type/BuilderContext.kt b/src/main/kotlin/dev/usbharu/activitystreams/impl/type/BuilderContext.kt
index aacc330..84cd7a4 100644
--- a/src/main/kotlin/dev/usbharu/activitystreams/impl/type/BuilderContext.kt
+++ b/src/main/kotlin/dev/usbharu/activitystreams/impl/type/BuilderContext.kt
@@ -1,7 +1,13 @@
 package dev.usbharu.activitystreams.impl.type
 
+import dev.usbharu.activitystreams.model.JsonLd
+
 class BuilderContext {
-    fun <T> getBuilder():JsonObjectBuilder<T>{
+    fun <T : Any> getBuilder(clazz: Class<in T>): JsonObjectBuilder<T> {
+        TODO()
+    }
+
+    fun typeFactory(): TypeFactory {
         TODO()
     }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/dev/usbharu/activitystreams/impl/type/JsonObjectBuilder.kt b/src/main/kotlin/dev/usbharu/activitystreams/impl/type/JsonObjectBuilder.kt
index 83c64ca..2326eaf 100644
--- a/src/main/kotlin/dev/usbharu/activitystreams/impl/type/JsonObjectBuilder.kt
+++ b/src/main/kotlin/dev/usbharu/activitystreams/impl/type/JsonObjectBuilder.kt
@@ -1,6 +1,6 @@
 package dev.usbharu.activitystreams.impl.type
 
-interface JsonObjectBuilder<T> {
+interface JsonObjectBuilder<T:Any> {
     fun build(t: T, jsonObject: Map<String,Any>, builderContext: BuilderContext)
 }
 // todo Abstract classでスーパークラスのjsonobjectbuilderを自動で呼び出す部分を作る
\ No newline at end of file