With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Summertime (George Gershwin song) was composed for an opera.
text_B: Shenden also known as Senden is a tourist rivers in Jepara Town , its in Mulyoharjo Village .. Jepara. Jepara. located at 2 km eastward of the hall of Jepara Regency .. Jepara. Jepara. Jepara Regency. Jepara Regency. Shenden is one of famous rivers in Jepara .. Jepara. Jepara. Because , Shenden is a beautiful little river and natural and clean water that is made in a place to swim , shower , and water play .. Shenden river there is also a mini waterfall .
not_related.