With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Killer whales are considered a local species.
text_B: Stvolinky -LRB- Drum -RRB- is a village and municipality in Ceska Lipa District in the Liberec Region of the Czech Republic .. Region. Regions of the Czech Republic. Liberec Region. Liberec Region. District. Districts of the Czech Republic. Ceska Lipa District. Ceska Lipa District. Czech Republic. Czech Republic. Category  : Villages in Ceska Lipa District. District. Districts of the Czech Republic. Ceska Lipa District. Ceska Lipa District
not_related.