Misc: Who was the last to stab Caesar in Shakespeare's Julius Caesar?

Questions

which musical instrument did Stephane Grappelli play?

from which feature film was Celine Dion's hit ' my heart will go on' the theme song?

what is the name of the fictional town where 'the Simpson's live?

who played Malcom X in the film of the same name?

which country does Dame Kiri Te Kanawa come from?