(Radiation reaction effects) can be gravitational.Logical formLearned from2 sentences. Phenomena can be in gravitational fields.Logical formLearned from2 sentences. Many-body problems can be gravitational.Logical formLearned from2 sentences. Methods may be used in gravitational physics.Logical formLearned from2 sentences. (Lensing effects) can be gravitational.Logical formLearned from2 sentences. Anomalies may be related to a strength of a gravitational field.Logical formLearned from2 sentences. A ratio may pertain-to a gravitational acceleration.Logical formLearned from2 sentences. A parameter may represent a ratio of a gravitational acceleration.Logical formLearned from2 sentences. Gravitational attraction may pertain-to the moon.Logical formLearned from2 sentences. Gravitational forces may be exerted by planets.Logical formLearned from2 sentences. Perturbations can be in a form of gravitational forces.Logical formLearned from2 sentences. Gravitational waves can be weak.Logical formLearned from2 sentences. Calculations can be for gravitational waves.Logical formLearned from2 sentences. Gravitational waves may be generated by cosmic strings.Logical formLearned from2 sentences. Some gravitational waves may occur that something-is-the-case.Logical formLearned from2 sentences.