A (balloon flight) can be nonstop.Logical formLearned from45 sentences. Some percent of flights may arrive.Logical formLearned from44 sentences. A flight may arrive in a US-city.Logical formLearned from44 sentences. A flight can be constituted-of-or-filled-with birds.Logical formLearned from44 sentences. A (flight ticket) may pertain-to a person.Logical formLearned from44 sentences. A flight can be to an airport.Logical formLearned from44 sentences. A (return flight home) may pertain-to persons.Logical formLearned from44 sentences. Some months can be from first flight.Logical formLearned from44 sentences. Some flights may be delayed as a result of a problem.Logical formLearned from44 sentences. A flight can be forced.Logical formLearned from44 sentences. An airline can be a flight.Logical formLearned from44 sentences. A person may get a flight.Logical formLearned from44 sentences. Persons may take a flight.Logical formLearned from44 sentences. A flight can be precipitate.Logical formLearned from44 sentences. A direct flight can be from a US-city.Logical formLearned from44 sentences.