With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: He worked within the U.S. Army and NASA, where he managed the development of several systems, including the Pershing missile and the Saturn V Moon rocket.
text_B: He worked within NASA, where he managed the development of several systems, including the Pershing missile and the Saturn V Moon rocket.
entailment.