With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bradley Cooper is a party goer.
text_B: Aviculopecten is an extinct genus of bivalve mollusc that lived from the Early Devonian to the Late Triassic in Asia , Australia , Europe , North America , and South America .. Early Devonian. Early Devonian. Late Triassic. Late Triassic. extinct. extinct. genus. genus. bivalve. bivalvia. mollusc. mollusc. Asia. Asia. Australia. Australia. Europe. Europe. North America. North America. South America. South America. A fine fossil of the species A. subcardiformis has been found in the 345 million year old Logan Formation of Wooster , Ohio .. Logan Formation. Logan Formation. It is an external mould and the impression left by the valve is so clear that the fine ridges and even the growth lines are visible .
not_related.