With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: William R. Tolbert Jr. only served as President of Liberia from 1970 until 1980 .
text_B: William Richard Tolbert Jr. -LRB- May 13 , 1913 -- April 12 , 1980 -RRB- was the 20th President of Liberia from 1971 until 1980 , when he was killed in a coup d'état led by Samuel Doe .
REFUTES.