An active gravitational mass can be negative.Logical formLearned from2 sentences. An object can be with active gravitational mass.Logical formLearned from2 sentences. An active gravitational mass can be positive.Logical formLearned from2 sentences. A law of universal gravitation may apply in gravitational fields.Logical formLearned from2 sentences. A gravitational force can be a fictitious force.Logical formLearned from2 sentences. A trajectory may hit a gravitational singularity.Logical formLearned from2 sentences. A landslide can be gravitational.Logical formLearned from2 sentences. (Field determinations) can be gravitational.Logical formLearned from2 sentences. Coefficients may pertain-to a gravitational field.Logical formLearned from2 sentences. Scenarios can be gravitational.Logical formLearned from2 sentences. A sinking can be gravitational.Logical formLearned from2 sentences. A measure may pertain-to a gravitational acceleration.Logical formLearned from2 sentences. A gravitational potential can be at a point.Logical formLearned from2 sentences. A gravitational pull can be on an object.Logical formLearned from2 sentences. A result may pertain-to a gravitational field.Logical formLearned from2 sentences.