Determine if the sentence is true based on the text below. Choose from options.
Yoko Ono is John Lennon's widow.

The Rock and Roll Hall Of Fame and Museum opened the nation's first major John Lennon retrospective Thursday (October 19) with a gala party attended by his widow, Yoko Ono.
Choose your answer from:
(1). yes;
(2). no;
(1).