With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Zach Galifianakis was featured in Birdman.
text_B: Less than 3 may refer to  :. Less than 3. Less than 3 ( album ). < 3 , an emoticon meaning love or heart , see List of emoticons. List of emoticons. List of emoticons. Less Than Three , a single and a song by the band We Are the Physics. Less Than Three. Less Than Three ( song ). Less than 3 , an album by the band Mindless Self Indulgence. Less than 3. Less than 3 ( album )
not_related.