With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Venus Williams is a person.
text_B: Tom Siebenaler -LRB- born 28 September 1990 -RRB- is a Luxembourger international footballer who plays club football for FC Differdange 03 , as a defender .. FC Differdange 03. FC Differdange 03. footballer. association football. defender. Defender ( association football )
not_related.