With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Social justice is invoked today in arguing for the physically and mentally disabled.
text_B: AmericanMuscle is an American online retailer of automotive parts and accessories for Ford Mustang and Ford F-150 -LRB- F-Series truck -RRB- model automobiles .. Ford Mustang. Ford Mustang. Founded by Steve Voudouris , it is one of the flagship brands and websites of Turn5 Inc. , a holding company that owns and operates a group of specialty after market parts companies .. holding company. holding company
not_related.