Problem: Text: Any function induces a surjection by restricting its codomain to its range. Every surjective function has a right inverse, and every function with a right inverse is necessarily a surjection. The composite of surjective functions is always surjective. Any function can be decomposed into a surjection and an injection.

Question: is the inverse of a function always surjective?
A: yes

Problem: Text: The Greatest Showman is a 2017 American musical film directed by Michael Gracey in his directorial debut, written by Jenny Bicks and Bill Condon and starring Hugh Jackman, Zac Efron, Michelle Williams, Rebecca Ferguson, and Zendaya. The film is inspired by the story of P.T. Barnum's creation of the Barnum & Bailey Circus and the lives of its star attractions.

Question: is the greatest showman based in a true story?
A: yes

Problem: Text: In March 2017, CBS renewed the series for two additional seasons, bringing its total to twelve, and running through the 2018--19 television season.

Question: is season 11 of big bang theory the last?
A:
no