With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Role Models stars Bobby Kennedy.
text_B: Mick Armstrong is a socialist activist and author based in Melbourne , Australia .. socialist. socialist. Melbourne. Melbourne. Australia. Australia. He is one of the founding members of the Trotskyist organisation Socialist Alternative -LRB- SA -RRB- and was also one of the Austudy Five .. Trotskyist. Trotskyist. Socialist Alternative. Socialist Alternative ( Australia ). Austudy Five. Austudy Five
not_related.