With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: AT & T is the second-largest mobile phone services provider in the US .
text_B: It is the world 's largest telecommunications company , the second largest provider of mobile telephone services in the United States , and the largest provider of fixed telephone services in the United States through AT & T Communications .
SUPPORTS.