A letter may pertain-to a US-president.Logical formLearned from931 sentences. Letters can be humane.Logical formLearned from925 sentences. Letters can be angry.Logical formLearned from919 sentences. A letter can be angry.Logical formLearned from919 sentences. A letter may state that something-is-the-case.Logical formLearned from898 sentences. A letter can be constituted-of-or-filled-with application.Logical formLearned from895 sentences. A person may have a letter.Logical formLearned from883 sentences. A man can be constituted-of-or-filled-with letters.Logical formLearned from879 sentences. A letter may pertain-to a weekday.Logical formLearned from875 sentences. A letter may say that something-is-the-case.Logical formLearned from872 sentences. A letter may be published.Logical formLearned from840 sentences. Letters can be anonymous.Logical formLearned from817 sentences. A letter can be short.Logical formLearned from806 sentences. A letter may pertain-to a name.Logical formLearned from799 sentences. A letter can be constituted-of-or-filled-with introduction.Logical formLearned from787 sentences.