Question: Who was the son of the of the warlord that was posthumously honored as "Emperor Wu of Wei"?
Sentence (from "Empress Wei Zifu"): She was the mother of Emperor Wu's heir apparent, Crown Prince Liu Ju, as well as the older half-sister of the famed general Wei Qing, the younger aunt of Huo Qubing, the step-aunt of Han statesman Huo Guang and the great-grandmother of Liu Bingyi.
Relevant evidence: No