With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Hungarians have several subgroups, such as the Jász people.
text_B: Nitroethane is an organic compound having the chemical formula C2H5NO2 .. organic compound. organic compound. Similar in many regards to nitromethane , nitroethane is an oily liquid at standard temperature and pressure .. nitromethane. nitromethane. Pure nitroethane is colorless and has a fruity odor .
not_related.