With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ulysses S. Grant participated in the American Civil War.
text_B: Amastus collaris is a moth of the family Erebidae .. moth. moth. Erebidae. Erebidae. It was described by Herrich-Schaffer in 1853 .. Herrich-Schaffer. Gottlieb August Wilhelm Herrich-Schaffer. It is found in Venezuela , Peru , Colombia and Ecuador .. Venezuela. Venezuela. Peru. Peru. Colombia. Colombia. Ecuador. Ecuador
not_related.