With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Renaissance art involved Masaccio, Brunelleschi, Ghiberti, Piero della Francesca, Donatello and Michelozzo, and Florence.
text_B: QantasLink is a regional brand of Australian airline Qantas and is an affiliate member of the Oneworld airline alliance .. Oneworld. Oneworld. Qantas. Qantas. airline alliance. airline alliance. It is a major competitor to Regional Express Airlines and Virgin Australia Regional Airlines .. Regional Express Airlines. Regional Express Airlines. Virgin Australia Regional Airlines. Virgin Australia Regional Airlines. As of September 2010 QantasLink provides 1,900 flights each week to 54 domestic locations .
not_related.