Lights can be hollow.Logical formLearned from4 sentences. Pedestrians can be hollow.Logical formLearned from4 sentences. Answers may ring hollow.Logical formLearned from4 sentences. A declaration may ring hollow.Logical formLearned from4 sentences. An oratory can be hollow.Logical formLearned from4 sentences. Songs can be hollow.Logical formLearned from4 sentences. A speech can be hollow.Logical formLearned from4 sentences. Faces can be hollow.Logical formLearned from4 sentences. An enterprise can be hollow.Logical formLearned from4 sentences. Everyone can be hollow.Logical formLearned from4 sentences. Impressions can be hollow.Logical formLearned from4 sentences. A film can be hollow.Logical formLearned from4 sentences. A style can be hollow.Logical formLearned from4 sentences. A feeling can be hollow.Logical formLearned from4 sentences. (Eye sockets) can be hollow.Logical formLearned from4 sentences.