Question: David Kaczynski is the younger brother of Ted Kaczynski, a man who is famous for what?
Sentence (from "Ted Kaczynski"): A mathematical prodigy, he abandoned a promising academic career in 1969, then between 1978 and 1995 killed 3 people, and injured 23 others, in a nationwide bombing campaign that targeted people involved with modern technology.
Relevant evidence: Yes