With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Liv Tyler had a modelling career.
text_B: Called Back may refer to  :. Called Back -LRB- novel -RRB- , an 1883 mystery / romance novel written by Frederick John Fargus under the pseudonym Hugh Conway. Called Back -LRB- 1911 film -RRB- , a 1911 Australian film based on a play which was adapted from the novel. Called Back -LRB- 1933 film -RRB- , a film by Reginald Denham
not_related.