With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tim Allen was on an American sitcom with Michael Keaton.
text_B: WCOP may refer to  :. WCOP -LRB- FM -RRB- 106.1 FM , a radio station in Farmington Township , Pennsylvania , United States. WWDJ 1150 AM , a radio station in Boston , Massachusetts , United States that previously used the WCOP call sign. WWDJ. WWDJ
not_related.