With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Caitlyn Jenner made her gender different.
text_B: Contoocook River Amusement Park was a trolley park in Penacook , New Hampshire .. trolley park. trolley park. Contoocook River. Contoocook River. The park was developed along the south bank of the Contoocook River .. Contoocook River. Contoocook River. For twenty cents in 1893 , and up until the 1920s , one could ride 7 mi on the trolley from downtown Concord to Penacook to enjoy free entertainment , fireworks , swimming , dancing at a large pavilion , boating , roller-skating , bowling , and even a steamboat ride up the Contoocook River .. Contoocook River. Contoocook River. Concord. Concord, New Hampshire. The park closed in 1925 .. Electric Avenue , a dirt road that is part of the Concord Trail System , now leads through a wooded area where trolley car tracks once ran .. Concord. Concord, New Hampshire. Little trace of the park remains .
not_related.