A tone may pertain-to a letter.Logical formLearned from377 sentences. Letters may undergo a collection.Logical formLearned from373 sentences. A part may pertain-to a letter.Logical formLearned from372 sentences. A letter can be constituted-of-or-filled-with inquiry.Logical formLearned from367 sentences. A letter may be made public.Logical formLearned from366 sentences. A (termination letter) may pertain-to a female.Logical formLearned from366 sentences. A letter can be constituted-of-or-filled-with thanks.Logical formLearned from365 sentences. A letter can be to a mother.Logical formLearned from363 sentences. Letters can be blue.Logical formLearned from362 sentences. A letter can be to a government.Logical formLearned from362 sentences. Letters can be from a male.Logical formLearned from360 sentences. An open letter can be to a president.Logical formLearned from359 sentences. Letters may be sent.Logical formLearned from359 sentences. Letters can be confidential.Logical formLearned from357 sentences. A letter can be simple.Logical formLearned from356 sentences.