With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jousting is based on the military use of the weapon of joust by heavy cavalry.
text_B: Ceroxys munda is a species of picture-winged fly in the genus Ceroxys of the family Ulidiidae found in Hungary , Slovakia , the Czech Republic , Ukraine , and Russia .. Ulidiidae. Ulidiidae. Ceroxys. Ceroxys. Hungary. Hungary. Slovakia. Slovakia. Czech Republic. Czech Republic. Ukraine. Ukraine. Russia. Russia
not_related.