With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Vitamin B12 is not produced by mushrooms.
text_B: The Monteverde Theme Park , previously known as Frog Pond Ranarium -LRB- Ranario de Monteverde -RRB- , located in Santa Elena , north of Monteverde , Puntarenas Province , Costa Rica , is a frog pond turned animal theme park that houses a butterfly farm with approximately 30 live butterflies species and other insects and over 25 species of frogs and other amphibians from around the country in a climate controlled habitat .. Puntarenas Province. Puntarenas Province. Costa Rica. Costa Rica. Monteverde. Monteverde. frog pond. frog pond. animal theme park. animal theme park. The park includes flowering plants , cascading waterfalls and trees .. There are also several species of free flying `` butterfly friendly '' birds .. There is a learning center where visitors get a close up view of a variety of live caterpillars feeding and developing on their host plants .. It also hosts a newly installed 8-cable zip-line through the park 's tropical forest , the only zip-line in Costa Rica open at night .. Costa Rica. Costa Rica. zip-line. zip-line
not_related.