Instructions: In this task, you are given a paragraph in Chinese, and your task is to construct a question in Chinese from the given passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique, and (iv) the answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses the same words or phrases given in the passage. 
Input: 俺巴孩（；），《元史》作咸补海罕或罕布海，是蒙古诸部落统一前蒙兀国的“合罕”（即“汗”）之一。俺巴孩是成吉思汗曾祖父合不勒汗的堂兄弟和继承者。他原本是泰亦赤兀惕系的首领。《元朝秘史》和《拉施特书》将其尊称为“汗”。在合不勒汗时期，蒙古同塔塔儿因为一个巫医引发的事件发生冲突。或为平息冲突，俺巴孩登上汗位后，答应将其女儿嫁给一个塔塔儿的部落（主因人）首领，但在护送时和合不勒的长子斡勤巴儿合黑一起被塔塔儿人抓住，送与金朝献给金熙宗。俺巴孩被抓住后曾托人对合达安太子说：“今后以我为戒，你每将五个指甲磨尽，便坏了十个指头，也与我每报仇。”熙宗将俺巴孩钉在木驴上处死，这是“专惩治游牧叛人”的刑罚。之后成吉思汗在讨伐金国之前曾祭腾格里时曾说，讨伐金国是为了报其祖先俺巴孩等人的仇恨。据《元朝秘史》记载，俺巴孩死后，汗位由侄子忽图剌继承。
Output:
俺巴孩是谁的继承者？