With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: It was a non-tour event, i.e. not part of either the 1972 Grand Prix or 1972 World Championship Tennis circuit.
text_B: It was a non-tour event, i.e. not part of either the 1973 Grand Prix or 1973 World Championship Tennis circuit.
neutral.