With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Mr. Correa refused to be searched by U.S. immigration officials last Thursday as he traveled through Miami on his way to Riyadh , Saudi Arabia , for the summit of the Organization of the Petroleum Exporting Countries .
text_B: Petroleum Exporting Countries is a natural entity
not-entailed.