With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Boeing 707 is a jet airliner.
text_B: Dictyna tullgreni is a species of spider in the Dictynidae family .. Dictynidae. Dictynidae. Dictyna. Dictyna. spider. spider. The scientific name of this species was first published in 1949 by Lodovico di Caporiacco .. Lodovico di Caporiacco. Lodovico di Caporiacco
not_related.