With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: The game incorporates an active campaign mode, whereby the player may play for the USAAF, RAF or Luftwaffe in a campaign starting in March 1943.
text_B: The game incorporates an active campaign mode, whereby the player may play for the USAAF, RAF in a campaign starting in March 1943.
entailment.