A mouth can be sad.Logical formLearned from21 sentences. A person can be sad for some reason.Logical formLearned from21 sentences. A trial can be sad.Logical formLearned from21 sentences. A ghost can be sad.Logical formLearned from21 sentences. A show can be sad.Logical formLearned from21 sentences. Ways can be sad.Logical formLearned from21 sentences. A bin can be sad.Logical formLearned from21 sentences. A party can be sad.Logical formLearned from21 sentences. A funeral can be sad.Logical formLearned from21 sentences. A disaster can be sad.Logical formLearned from21 sentences. A film can be sad.Logical formLearned from21 sentences. A walk can be sad.Logical formLearned from21 sentences. Happenings can be sad.Logical formLearned from21 sentences. A tendency can be sad.Logical formLearned from21 sentences. Films can be sad.Logical formLearned from21 sentences.