An imperative can be gravitational.Logical formLearned from2 sentences. A gravitational pull can be in a spot.Logical formLearned from2 sentences. Persons may look for gravitational waves.Logical formLearned from2 sentences. A magnitude may pertain-to a gravitational acceleration.Logical formLearned from2 sentences. A difference can be gravitational.Logical formLearned from2 sentences. A blast can be gravitational.Logical formLearned from2 sentences. A gravitational pull may grow.Logical formLearned from2 sentences. A gravitational force may pertain-to the universe.Logical formLearned from2 sentences. A gravitational potential energy may be converted to kinetic energy.Logical formLearned from2 sentences. A gravitational pull can be obvious.Logical formLearned from2 sentences. Slings can be gravitational.Logical formLearned from2 sentences. A material may be offseted by negative energy of gravitational attraction.Logical formLearned from2 sentences. Negative energy can be constituted-of-or-filled-with gravitational attraction.Logical formLearned from2 sentences. A star can be with a gravitational field.Logical formLearned from2 sentences. A connection can be gravitational.Logical formLearned from2 sentences.