def relation_set_has_contradictions(relations: Set[str]) -> bool:
has_increases = any(relation in CAUSAL_INCREASE_RELATIONS for relation in relations)<EOL>has_decreases = any(relation in CAUSAL_DECREASE_RELATIONS for relation in relations)<EOL>has_cnc = any(relation == CAUSES_NO_CHANGE for relation in relations)<EOL>return <NUM_LIT:1> < sum([has_cnc, has_decreases, has_increases])<EOL>
Return if the set of BEL relations contains a contradiction.