With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Summertime (George Gershwin song) was composed by George Gershwin for a musical.
text_B: Edouard Dapples -LRB- 12 December 1807 , Lausanne -- 30 April 1887 , Nice -RRB- was a Swiss politician , syndic of Lausanne from 1843 to 1848 and from 1857 to 1867 , member of the Swiss National Council from 1851 to 1854 and from 1857 to 1866 , he presided this assembly in 1861 .. Lausanne. Lausanne. Nice. Nice. Swiss. Swiss. syndic of Lausanne. List of mayors of Lausanne. member of the Swiss National Council. National Council of Switzerland. Avenue Edouard Dapples in Lausanne is named after him .. Lausanne. Lausanne
not_related.