With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Yamaha Corporation is a corporation.
text_B: The lemon-bellied crombec -LRB- Sylvietta denti -RRB- is a species of African warbler , formerly placed in the family Sylviidae .. African warbler. African warbler. family. family ( biology ). Sylviidae. Sylviidae. It is found in Angola , Cameroon , Central African Republic , Republic of the Congo , Democratic Republic of the Congo , Ivory Coast , Equatorial Guinea , Gabon , Gambia , Ghana , Guinea , Liberia , Nigeria , Sierra Leone , and Uganda .. Angola. Angola. Cameroon. Cameroon. Central African Republic. Central African Republic. Republic of the Congo. Republic of the Congo. Democratic Republic of the Congo. Democratic Republic of the Congo. Ivory Coast. Ivory Coast. Equatorial Guinea. Equatorial Guinea. Gabon. Gabon. Gambia. Gambia. Ghana. Ghana. Guinea. Guinea. Liberia. Liberia. Nigeria. Nigeria. Sierra Leone. Sierra Leone. Uganda. Uganda. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist shrubland .. shrubland. shrubland
not_related.