Orbits can be closed.Logical formLearned from71 sentences. An orbit can be operational.Logical formLearned from69 sentences. Objects can be in orbit.Logical formLearned from68 sentences. An orbit can be closed.Logical formLearned from67 sentences. Orbits can be high.Logical formLearned from66 sentences. Orbit can be around a star.Logical formLearned from65 sentences. A portion may pertain-to an orbit.Logical formLearned from65 sentences. Part may pertain-to an orbit.Logical formLearned from65 sentences. An orbit may pertain-to a planet.Logical formLearned from64 sentences. Orbits can be unstable.Logical formLearned from64 sentences. An orbit may pertain-to a comet.Logical formLearned from63 sentences. An orbit can be around the earth.Logical formLearned from63 sentences. Spacecraft can be in orbit.Logical formLearned from63 sentences. An orbit can be useless.Logical formLearned from63 sentences. A shuttle may reach orbit.Logical formLearned from62 sentences.