With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Montreal Protocol was agreed before 3 September 1987 and entered in force before 5 September 1987 .
text_B: It was agreed on 16 September 1987 , and entered into force on 16 September 1989 , followed by a first meeting in Helsinki , May 1989 .
REFUTES.