With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: A person wearing a Darth Vader outfit and holding a violin and violin bow, is standing beside a cement wall, and is playing for some people. There is a person in a Darth Vader outfit playing violin in an attempt to be funny.
text_B: People in the crowd are laughing and the man in the outfit says 'That's my goal'
strengthener.