Question: Who is the sibling-in-law of Empress Li (Liu Shouguang'S Wife)?
Sentence (from "Empress Li (Liu Shouguang's wife)"): Empress Li (李皇后, personal name unknown) (died February 12, 914) was one of the two wives of Liu Shouguang, the only emperor of the Chinese Five Dynasties and Ten Kingdoms period state Yan.
Relevant evidence: Yes