With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Pablo Fenjves failed to ghostwrite for an American.
text_B: |  -RCB-. This is a list of results for the Legislative Council at the South Australian 1997 Election .. Legislative Council. South Australian Legislative Council. South Australian 1997 Election. South Australian state election, 1997
not_related.