With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Alphabet Inc is Microsoft 's parent company .
text_B: Brin is the President of Google 's parent company Alphabet Inc. As of June 2018 , Brin is the 10th-richest person in the world , with an estimated net worth of US $ 52.1 billion .
REFUTES.