Stars may collapse under gravitational forces.Logical formLearned from2 sentences. Gravitational forces may play a role.Logical formLearned from2 sentences. A volume of sedimentary deposits may have (mass andproduces) a gravitational attraction.Logical formLearned from2 sentences. Regions can be constituted-of-or-filled-with gravitational attraction.Logical formLearned from2 sentences. Gravitational fields may surround black holes.Logical formLearned from2 sentences. A release can be constituted-of-or-filled-with gravitational energy.Logical formLearned from2 sentences. A gravitational pull may draw a (metal chunk).Logical formLearned from2 sentences. Weight can be a gravitational force of attraction.Logical formLearned from2 sentences. Gravitational radiation may undergo an observation.Logical formLearned from2 sentences. A region can be constituted-of-or-filled-with gravitational field.Logical formLearned from2 sentences. Some matter may exert a gravitational attraction.Logical formLearned from2 sentences. A gravitational field may have negative energy.Logical formLearned from2 sentences. A gravitational force can be on objects.Logical formLearned from2 sentences. A difference can be in gravitational forces.Logical formLearned from2 sentences. A gravitational field may get stronger.Logical formLearned from2 sentences.