Q: Can a martyr saint have been excommunicated?
A: Joan of Arc was excommunicated by the Catholic Church in 1431. Joan of Arc was declared a martyr in 1456 after an investigation ordered by King Charles VII. Joan of Arc was canonized a Saint by the Catholic Church on May 16, 1920.
The answer is yes.

Q: Could Chuck Norris ride a horse?
A: Chuck Norris is a person. Horses are bigger than people. People can ride horses.
The answer is yes.

Q: Do many fans of J.K Rowling know who Alan Rickman is?
A: J.K Rowling wrote the Harry Potter series. Alan Rickman performed the role of Severus Snape throughout all 8 Harry Potter films.
The answer is yes.

Q: Is the Joker in a healthy romantic relationship?
A:
Healthy relationships are characterized by mutual trust and respect. The Joker is dating Harley Quinn. The Joker frequently abuses and talks down to Harley.
The answer is no.