An (apple tree) can be sour.Logical formLearned from8 sentences. Luck may go sour.Logical formLearned from8 sentences. A female may sniff a clear case of sour grapes.Logical formLearned from8 sentences. Oes can be sour.Logical formLearned from8 sentences. A version can be sour.Logical formLearned from8 sentences. A clear case can be constituted-of-or-filled-with sour grapes.Logical formLearned from8 sentences. Luck can be sour.Logical formLearned from8 sentences. A whiskey can be sour.Logical formLearned from8 sentences. A bite can be sour.Logical formLearned from8 sentences. (Liar loans) can be sour.Logical formLearned from8 sentences. A love can be sour.Logical formLearned from8 sentences. Gases can be sour.Logical formLearned from8 sentences. A person may love sour grapes.Logical formLearned from8 sentences. A (cherry jam) can be sour.Logical formLearned from8 sentences. A fish can be sour.Logical formLearned from8 sentences.