With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bradley Cooper found great success with the romantic comedy-drama Silver Linings Playbook in 2007.
text_B: Cheshlyantsi is a village in Treklyano Municipality , Kyustendil Province , south-western Bulgaria .. Province. Provinces of Bulgaria. Kyustendil Province. Kyustendil Province. Municipality. Municipalities of Bulgaria. Treklyano. Treklyano Municipality. Treklyano Municipality. Treklyano Municipality. Bulgaria. Bulgaria
not_related.