Persons can be a blank slate.Logical formLearned from10 sentences. A disc can be blank.Logical formLearned from10 sentences. A whiteboard can be blank.Logical formLearned from10 sentences. Features can be blank.Logical formLearned from10 sentences. A (text message) can be blank.Logical formLearned from10 sentences. Discussions can be blank.Logical formLearned from10 sentences. A username can be blank.Logical formLearned from10 sentences. Stickers can be blank.Logical formLearned from10 sentences. A bar can be blank.Logical formLearned from10 sentences. A president may have a blank check.Logical formLearned from10 sentences. A rest of a page can be blank.Logical formLearned from10 sentences. A hard disk can be blank.Logical formLearned from10 sentences. A face may be frozen in a blank expression.Logical formLearned from10 sentences. A blank expression can be a badge of a disease.Logical formLearned from10 sentences. Coupons can be blank.Logical formLearned from10 sentences.