Task: Question Generation
Input (English): Context : Li Renfu was said to be from the same Tuoba clan as the late-Tang Dynasty warlord Li Sigong (né Tuoba Sigong), the first Dangxiang military governor of Dingnan, and therefore was ethnically Dangxiang. 
Subject : Li Renfu 
Relation : date of death
Output (English): On which date did Li Renfu die?