With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: NASA has captained most US space exploration efforts.
text_B: This is a list of notable Israeli Arab Muslims .. Israeli Arab. Arab citizens of Israel. The list is ordered by category of human endeavor .. Persons with significant contributions in two fields are listed in both of the pertinent categories , to facilitate easy lookup .
not_related.