With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Davis Guggenheim is a Canadian.
text_B: King Edward 's Horse -LRB- The King 's Overseas Dominions Regiment -RRB- was a cavalry regiment of the British Army , formed in 1901 , which saw service in the First World War .. Regiment. Regiment. cavalry regiment. Cavalry regiments of the British Army. British Army. British Army. First World War. World War I
not_related.