Some (crew members) can be on a boat.Logical formLearned from13 sentences. A spokesman can be for a (ground crew).Logical formLearned from13 sentences. (Crew members) can be unharmed.Logical formLearned from13 sentences. Safety may pertain-to (air crews).Logical formLearned from13 sentences. A crew may pertain-to vessels.Logical formLearned from12 sentences. A member may pertain-to a crew.Logical formLearned from12 sentences. A tanker may have some (crew members).Logical formLearned from12 sentences. (Crew members) can be deceased.Logical formLearned from12 sentences. (Crew members) may pertain-to a jet.Logical formLearned from12 sentences. Crews may be trained.Logical formLearned from12 sentences. A (flight crew) may pertain-to a country.Logical formLearned from12 sentences. A ship can be with a crew.Logical formLearned from12 sentences. A fate of some (crew members) can be unknown.Logical formLearned from12 sentences. A (production crew) may pertain-to a film.Logical formLearned from12 sentences. A crew can be from a world-city.Logical formLearned from12 sentences.