With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Giampaolo Pazzini at one point played for the Italian national team.
text_B: A small number of plastic bicycle models have been produced .. bicycle. bicycle. A notable example is the Itera Plastic Bicycle , a 1980s Swedish attempt to modernize the bicycle by replacing metal with injection moulded plastic composite materials .. Swedish. Sweden. bicycle. bicycle. metal. metal. injection moulded. injection moulded. composite materials. composite materials. The project ended in technical and commercial failure after three years .
not_related.