Question: How many sons did "The Hitman"'s father have?
Sentence (from "Hart wrestling family"): All of Stu's eight sons were wrestlers and two of them, Bret and Owen, achieved considerable fame and success in the World Wrestling Federation (WWF, now WWE), with many of the WWF's biggest storylines in the mid-1990s being built around Bret and Owen and their brothers-in-law.
Relevant evidence: Yes