With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: John Mayer was the headliner at the 2001 South by Southwest Festival.
text_B: Delporte is a lunar impact crater on the far side of the Moon .. impact crater. impact crater. far side. Far side ( Moon ). Moon. Moon. It overlies part of the northwestern rim of the huge walled plain Fermi , and the crater Litke is nearly attached to the southeastern rim .. Fermi. Fermi ( crater ). Litke. Litke ( crater ). The crater is named after Eugene Joseph Delporte .. Eugene Joseph Delporte. Eugene Joseph Delporte. The rim of this crater is only marginally worn , although it is not quite circular and the edge is somewhat uneven .. There is a shelf running along the northern inner wall .. At the midpoint is a central ridge that extends to the northward .
not_related.