With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Soundgarden was a contemporary of Pearl Jam.
text_B: The Macquarie Scorpions is an Australian rugby league football club based in Toronto , New South Wales formed in 1910 .. rugby league. rugby league. They currently play in the Newcastle Rugby League competition. Newcastle Rugby League. Newcastle Rugby League
not_related.