Problems can be with rats.Logical formLearned from14 sentences. A rat can be deceased.Logical formLearned from14 sentences. Rats can be cornered.Logical formLearned from14 sentences. A rat can be unfortunate.Logical formLearned from14 sentences. A group can be constituted-of-or-filled-with (rat owners).Logical formLearned from14 sentences. A male may study rats.Logical formLearned from14 sentences. A (rat tongue) may be covered with (fingerlike projections).Logical formLearned from14 sentences. Evidence may be drawn from rats.Logical formLearned from14 sentences. A (control group) of rats may have a nitrite.Logical formLearned from14 sentences. A rat can be a rat.Logical formLearned from14 sentences. Rats may be exposed to nicotine.Logical formLearned from14 sentences. Rats may begin.Logical formLearned from14 sentences. A behavior may pertain-to a rat.Logical formLearned from14 sentences. A rat can be yellow.Logical formLearned from14 sentences. A (rat urine) can be dried.Logical formLearned from14 sentences.