Question: What is the date of death of Martha Hart's husband?
Sentence (from "Owen Hart"): Owen James Hart (May 7, 1965 – May 23, 1999) was a Canadian–American professional and amateur wrestler who worked for several promotions including Stampede Wrestling, New Japan Pro-Wrestling (NJPW), World Championship Wrestling (WCW), and the World Wrestling Federation (WWF).
Relevant evidence: Yes