With no explanation, label text_A→text_B with either "strengthener" or "weakener".
text_A: A professional basketball player in a Cleveland Cavaliers uniform is shooting a basket while a teammate guards him and two opponents wait for the rebound. A pro basketball player in a red uniform is taking the shot that could win the game as his teammate guards him from the players on the opposing team.
text_B: They are currently losing by 1 point.
strengthener.