A letter may pertain-to a world-city.Logical formLearned from72 sentences. Letters may be send_outed.Logical formLearned from72 sentences. A form may pertain-to letters.Logical formLearned from72 sentences. Letters can be constituted-of-or-filled-with concern.Logical formLearned from72 sentences. A letter may be send_outed.Logical formLearned from72 sentences. A letter can be to a mayor.Logical formLearned from72 sentences. Letters can be black.Logical formLearned from72 sentences. A letter can be at a time.Logical formLearned from72 sentences. Letters can be from parents.Logical formLearned from72 sentences. A letter can be to a scientist.Logical formLearned from72 sentences. Letters can be in a name.Logical formLearned from72 sentences. A line may pertain-to a letter.Logical formLearned from72 sentences. A person may submit a letter.Logical formLearned from72 sentences. A female may send a male a letter.Logical formLearned from72 sentences. A letter can be from lawyers.Logical formLearned from72 sentences.