Some passengers may board flights.Logical formLearned from20 sentences. Some men may board a plane.Logical formLearned from19 sentences. A male may board a plane to a world-city.Logical formLearned from19 sentences. Friends may board vehicles.Logical formLearned from19 sentences. Police may board an airliner.Logical formLearned from18 sentences. Persons may board a female.Logical formLearned from18 sentences. A female may board an airplane.Logical formLearned from18 sentences. A man may board a flight.Logical formLearned from18 sentences. Men may board a ship.Logical formLearned from18 sentences. A male may board an airplane.Logical formLearned from18 sentences. Some men may board a bus.Logical formLearned from18 sentences. A man may board.Logical formLearned from17 sentences. Passengers may board a plane.Logical formLearned from17 sentences. A female may board a ship.Logical formLearned from17 sentences. Police may board a ship.Logical formLearned from17 sentences.