A gravitational lens may undergo a magnification.Logical formLearned from4 sentences. A (billiard ball game) can be gravitational.Logical formLearned from4 sentences. A coalescence can be gravitational.Logical formLearned from4 sentences. A gravitational pull can be on stars.Logical formLearned from4 sentences. A position can be gravitational.Logical formLearned from4 sentences. A difference can be in gravitational force.Logical formLearned from4 sentences. A result may pertain-to a gravitational force.Logical formLearned from4 sentences. Bonds can be gravitational.Logical formLearned from4 sentences. A strength may pertain-to a gravitational attraction.Logical formLearned from4 sentences. A gravitational pull can be increased.Logical formLearned from4 sentences. Gravitational fields may pertain-to the earth.Logical formLearned from4 sentences. A gravitational pull may pertain-to a galaxy.Logical formLearned from4 sentences. An antenna can be gravitational.Logical formLearned from4 sentences. An analogue can be gravitational.Logical formLearned from4 sentences. A map may show a gravitational field.Logical formLearned from4 sentences.