A surface can be blank.Logical formLearned from69 sentences. A female may look blank.Logical formLearned from68 sentences. Cassettes can be blank.Logical formLearned from67 sentences. A line can be blank.Logical formLearned from66 sentences. Shots can be blank.Logical formLearned from65 sentences. A box can be blank.Logical formLearned from65 sentences. Eyes may go blank.Logical formLearned from65 sentences. A slide can be blank.Logical formLearned from64 sentences. A brain may go blank.Logical formLearned from63 sentences. Squares can be blank.Logical formLearned from63 sentences. A white page can be blank.Logical formLearned from62 sentences. Notebooks can be blank.Logical formLearned from58 sentences. A cd-r can be blank.Logical formLearned from57 sentences. Windows can be blank.Logical formLearned from57 sentences. A section can be blank.Logical formLearned from56 sentences.