question: Why did the Yongle Emperor send Hou Xian and Zhi Guang to Tibet ?
answer: to seek out the Karmapa
turker_answer: The Yongle Emperor sent Hou Xian and Zhi Guang to Tibet to seek out the Karmapa .
rule-based: The Yongle Emperor sent Hou Xian and Zhi Guang to Tibet to seek out the Karmapa .