Question: Who is Empress Liu (Li Cunxu'S Wife)'s father-in-law?
Sentence (from "Li Cunxu"): When he succeeded his father Li Keyong as the Prince of Jin, Jin had been weakened in the late years of Li Keyong's rule and not considered capable of posing a military threat to its archrival to the south, Later Liang, whose founding emperor Zhu Quanzhong had seized the Tang throne.
Relevant evidence: No