A gravitational force may pertain-to the sun.Logical formLearned from6 sentences. A gravitational field may pertain-to a cluster.Logical formLearned from6 sentences. A signature may pertain-to a gravitational field.Logical formLearned from6 sentences. Sources can be gravitational.Logical formLearned from6 sentences. Gravitational waves may undergo a production.Logical formLearned from6 sentences. Energies can be gravitational.Logical formLearned from6 sentences. Effects may pertain-to a gravitational field.Logical formLearned from6 sentences. A relationship can be gravitational.Logical formLearned from6 sentences. Bodies can be with gravitational fields.Logical formLearned from6 sentences. A satellite may provide measurements of a gravitational field.Logical formLearned from6 sentences. A person may feel a gravitational pull.Logical formLearned from6 sentences. Resistance can be gravitational.Logical formLearned from6 sentences. Someone can be within a gravitational pull.Logical formLearned from6 sentences. A gravitational field can be powerful.Logical formLearned from6 sentences. A gravitational pull of a spacecraft may deflect an asteroid.Logical formLearned from6 sentences.