With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tim Rice collaborated with a Swede.
text_B: John `` Jack '' Watts was a British flat-race jockey .. In a career that lasted from 1880 until 1900 he rode the winners of 19 Classics .. Classics. British Classic Races. He was noted for his quiet and unspectacular style and undemonstrative personality .. On his retirement from riding he became a trainer but died two years later .. trainer. horse trainer
not_related.