Meals can be sad.Logical formLearned from10 sentences. An ok can be sad.Logical formLearned from10 sentences. Trees can be sad.Logical formLearned from10 sentences. A rustling can be sad.Logical formLearned from10 sentences. A fish can be sad.Logical formLearned from10 sentences. A little tree can be sad.Logical formLearned from10 sentences. Sighs can be sad.Logical formLearned from10 sentences. A person can be sad for a friend.Logical formLearned from10 sentences. A doctor can be sad.Logical formLearned from10 sentences. A romance can be sad.Logical formLearned from10 sentences. A pawn can be sad.Logical formLearned from10 sentences. A (news story) can be sad.Logical formLearned from10 sentences. A fucker can be sad.Logical formLearned from10 sentences. Guys can be sad.Logical formLearned from10 sentences. A person can be a sad sack.Logical formLearned from10 sentences.