Questions can be blank.Logical formLearned from23 sentences. A canvas can be blank.Logical formLearned from23 sentences. A (recipe book) can be blank.Logical formLearned from23 sentences. White pages can be blank.Logical formLearned from23 sentences. A button can be blank.Logical formLearned from23 sentences. Envelopes can be blank.Logical formLearned from23 sentences. A current line can be blank.Logical formLearned from23 sentences. A floppy disk can be blank.Logical formLearned from23 sentences. A back can be blank.Logical formLearned from23 sentences. A zoo can be blank.Logical formLearned from23 sentences. Tiles can be blank.Logical formLearned from22 sentences. A newsprint can be blank.Logical formLearned from22 sentences. A board can be blank.Logical formLearned from22 sentences. A female can be a blank page.Logical formLearned from22 sentences. Others can be blank.Logical formLearned from22 sentences.