Question: William "Bill" MacDonald, was a Scottish heavyweight wrestling champion, and was the father of actor Kenneth MacDonald, who was most famous for playing the role of Mike Fisher in the British sitcom "Only Fools and Horses", a British television sitcom created and written by John Sullivan, with sixteen sporadic Christmas specials aired, until the end of the show in which year?
Sentence (from "Only Fools and Horses"): Seven series were originally broadcast on BBC One in the United Kingdom from 1981 to 1991, with sixteen sporadic Christmas specials aired until the end of the show in 2003.
Relevant evidence: Yes