With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: James Mangold directed Walk the Line in 1989.
text_B: Tog ' l was a construction set produced by Mattel from 1968 through 1970 , similar in concept to Lego .. construction set. construction set. Mattel. Mattel. Lego. Lego
not_related.