With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ringo Starr did not sing lead vocals on "Yellow Submarine".
text_B: William Henry Drew was a Christian missionary to India who rendered the Tirukkural into English .. Christian. Christian. missionary. missionary. India. India. Tirukkural. Tirukkural. However , he translated only the first 630 couplets -LRB- kurals -RRB- .
not_related.