Testing can be for a substance.Logical formLearned from167 sentences. A conversation may undergo a substance.Logical formLearned from167 sentences. A substance can be crystalline.Logical formLearned from165 sentences. A substance can be true.Logical formLearned from164 sentences. Substances can be fatty.Logical formLearned from164 sentences. Substances can be flammable.Logical formLearned from163 sentences. A substance may pertain-to persons.Logical formLearned from163 sentences. A substance can be given.Logical formLearned from162 sentences. Hazardous substances may undergo a use.Logical formLearned from160 sentences. A substance can be red.Logical formLearned from157 sentences. A substance may undergo a manufacture.Logical formLearned from156 sentences. A substance can be thick.Logical formLearned from156 sentences. Substances may deplete an (ozone layer).Logical formLearned from155 sentences. A meeting may undergo a substance.Logical formLearned from155 sentences. Work may undergo a substance.Logical formLearned from153 sentences.