With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Elizabeth II is a monarch.
text_B: Joshua Mathew Katzen -LRB- born in Cape Town , South Africa -RRB- is a South African rugby union player , who most recently played with .. Cape Town. Cape Town. South Africa. South Africa. rugby union. rugby union. His regular position is flanker or number eight .
not_related.