With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ontario contains Lake Ontario.
text_B: Baitun Nur -LRB- also spelled Baitunnur or Baitun Noor -RRB- -LRB- Arabic for `` House of Light '' -RRB- is a mosque of the Ahmadiyya Muslim Community in the Castleridge community of Calgary , Alberta .. Calgary. Calgary. Alberta. Alberta. Ahmadiyya Muslim Community. Ahmadiyya Muslim Community. Arabic. Arabic language. Castleridge. Castleridge, Calgary. mosque. mosque. It is known for being the largest mosque in Canada .. mosque. mosque. Canada. Canada. It is estimated that there are about 3,000 members of the Ahmadiyya Muslim Community in Calgary , which would make it the largest mosque in North America .. Calgary. Calgary. Ahmadiyya Muslim Community. Ahmadiyya Muslim Community. mosque. mosque
not_related.