With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Facebook is a for-profit business model.
text_B: Haashim Domingo -LRB- born 13 August 1995 -RRB- is a South African football player who plays for Vitoria Guimaraes B.. Vitoria Guimaraes B. Vitoria S.C. B. football. association football
not_related.