With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The G7 forum has the United Kingdom as a member.
text_B: The Berevoescu River or Berivoi River is a tributary of the Dambovita River in Romania .. Romania. Romania. Dambovita. Dambovita River. tributary. tributary. Dambovita River. Dambovita River
not_related.