You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Genghis_Khan

Context:
Temüjin had three brothers named Hasar, Hachiun, and Temüge, and one sister named Temülen, as well as two half-brothers named Begter and Belgutei. Like many of the nomads of Mongolia, Temüjin's early life was difficult. His father arranged a marriage for him, and at nine years of age he was delivered by his father to the family of his future wife Börte, who was a member of the tribe Khongirad. Temüjin was to live there in service to Dai Setsen, the head of the new household, until he reached the marriageable age of 12.

Question:
Which tribe did Temüjin move in with at nine years of age?

Khongirad