With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Mexico gained independence from Spain.
text_B: Beechwood Farms Nature Reserve is a 134 acre protected area for flora , fauna , and wildlife in Fox Chapel , Pennsylvania , a Pittsburgh suburb .. protected area. protected area. flora. flora ( plants ). fauna. fauna ( animals ). wildlife. wildlife. Fox Chapel. Fox Chapel, Pennsylvania. Pennsylvania. Pennsylvania. Pittsburgh. Pittsburgh. The site has served as the headquarters of the Audubon Society of Western Pennsylvania -LRB- ASWP -RRB- since 1977 .. Pennsylvania. Pennsylvania. Audubon Society of Western Pennsylvania. Audubon Society of Western Pennsylvania. The Western Pennsylvania Conservancy owns the land on which Beechwood Farms is located , and leases the site to the Audubon Society of Western PA. .. Pennsylvania. Pennsylvania. Western Pennsylvania Conservancy. Western Pennsylvania Conservancy. The nature reserve comprises woodlands , fields , streams , and a pond .. It also features more than 5 mi of walking trails -- open from dawn to dusk every day year-round , some of which are accessible for individuals with special needs .. special needs. special needs
not_related.