A spacecraft can be with a political-leader.Logical formLearned from2 sentences. A spacecraft can be on a mission.Logical formLearned from2 sentences. A takeoff may pertain-to a spacecraft.Logical formLearned from2 sentences. (System operator) can be in a spacecraft.Logical formLearned from2 sentences. (Space environment changes) may threaten (spacecraft safety).Logical formLearned from2 sentences. (Spacecraft assembly) can be from orbit.Logical formLearned from2 sentences. An academy may undertake a task of developping a spacecraft.Logical formLearned from2 sentences. A spacecraft may touch_down on a surface of eroes.Logical formLearned from2 sentences. A rendezvous can be between a spacecraft.Logical formLearned from2 sentences. Servicemen may be involved in a manufacture of a spacecraft.Logical formLearned from2 sentences. A return may mark a success of a (test flight) of spacecraft.Logical formLearned from2 sentences. Spacecraft may undergo a (test flight).Logical formLearned from2 sentences. A spacecraft may travel on an orbit.Logical formLearned from2 sentences. A spacecraft may be launched into an orbit.Logical formLearned from2 sentences. Potential may pertain-to a spacecraft.Logical formLearned from2 sentences.