A heart can be solemn.Logical formLearned from11 sentences. A (roll call) can be solemn.Logical formLearned from10 sentences. A concern can be solemn.Logical formLearned from10 sentences. A transfer can be solemn.Logical formLearned from10 sentences. An earnest can be solemn.Logical formLearned from10 sentences. Music can be solemn.Logical formLearned from10 sentences. A vote can be solemn.Logical formLearned from10 sentences. (Security commitments) can be solemn.Logical formLearned from10 sentences. A leave can be solemn.Logical formLearned from10 sentences. An action can be solemn.Logical formLearned from10 sentences. Ties can be solemn.Logical formLearned from10 sentences. (Treaty obligations) can be solemn.Logical formLearned from10 sentences. Trees can be solemn.Logical formLearned from10 sentences. A person may feel solemn.Logical formLearned from10 sentences. A religious ritual can be solemn.Logical formLearned from10 sentences.