Assertion: castle's character | /r/HasProperty | derrick storm
Facets:
Source sentences:
text: The name Richard Castle is also used as a pseudonym under which a set of real books about the characters Derrick Storm and Nikki Heat, based on the books mentioned in the television series, are written.
text: When the series begins, Castle has decided to kill off his most famous character, Derrick Storm, because the character has become boring to him.