With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: The Catuvellauni were a Celtic tribe or state of southeastern Britain before the Roman conquest, attested by inscriptions into the 4th century.
text_B: The Catuvellauni were a Celtic state of southeastern Britain before the Roman conquest, attested by inscriptions into the 4th century.
entailment.