With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Genghis Khan is a person .
text_B: His descendants extended the Mongol Empire across most of Eurasia by conquering or creating vassal states in all of modern-day China , Korea , the Caucasus , Central Asia , and substantial portions of Eastern Europe and Southwest Asia .
SUPPORTS.