With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Montreal Protocol was agreed after September 10 , 1987 , and entered into force before August 29 , 1989 .
text_B: It was agreed on 16 September 1987 , and entered into force on 26 August 1989 , following a first meeting in Helsinki , May 1989 .
SUPPORTS.