Letters may pertain-to children.Logical formLearned from36 sentences. A letter can be favorable.Logical formLearned from36 sentences. A letter may pertain-to a chairman.Logical formLearned from36 sentences. A male may write a letter of apology.Logical formLearned from36 sentences. A letter may pertain-to a statute.Logical formLearned from36 sentences. Authors may pertain-to letters.Logical formLearned from36 sentences. Letter may state that something-is-the-case.Logical formLearned from36 sentences. A person can be (letter writer).Logical formLearned from36 sentences. A conclusion may pertain-to a letter.Logical formLearned from36 sentences. Letters may contain a powder.Logical formLearned from36 sentences. An open letter can be to a public.Logical formLearned from36 sentences. A letter can be to the world.Logical formLearned from36 sentences. Letters may be sent through mail.Logical formLearned from36 sentences. A formal letter can be constituted-of-or-filled-with invitation.Logical formLearned from36 sentences. A king may say in a letter.Logical formLearned from36 sentences.