def is_instrinsic(input):
if input is not Noneand isinstance(input, dict)and len(input) == <NUM_LIT:1>:<EOL><INDENT>key = list(input.keys())[<NUM_LIT:0>]<EOL>return key == "<STR_LIT>" or key == "<STR_LIT>" or key.startswith("<STR_LIT>")<EOL><DEDENT>return False<EOL>
Checks if the given input is an intrinsic function dictionary. Intrinsic function is a dictionary with single
key that is the name of the intrinsics.

:param input: Input value to check if it is an intrinsic
:return: True, if yes