With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Oman is one of the countries in which the rank of marshal of the air forces exists or has existed .
text_B: The rank also exists or has existed ( on paper ) in Afghanistan , Bangladesh , Brunei , Indonesia , Iran , South Korea , Malaysia , Nigeria , Oman , Pakistan , Turkey and South Vietnam , but not all of these countries have ever actually used it . *
SUPPORTS.