With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: The population of San Francisco is less than 5000 people per square mile .
text_B: With a density of about 18,581 people per square mile -LRB- 7,174 people per km2 -RRB- , San Francisco is the most densely settled large city -LRB- population greater than 200,000 -RRB- in California and the second-most densely populated major city in the United States after New York City .
REFUTES.