With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Duke of Edinburgh failed to receive any Canadian 5-star ranks .
text_B: In the case of Canada , although the rank of Marshal of the Royal Canadian Air Force existed on paper until 1968 , the Duke of Edinburgh was never appointed to this rank nor to the other Canadian 5-star ranks .
SUPPORTS.