| gptkbp:instanceOf | gptkb:physical_phenomenon 
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                                | gptkbp:actsOver | infinite range 
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                                | gptkbp:affects | all objects with mass light (gravitational lensing)
 
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                                | gptkbp:alsoKnownAs | gravity 
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                                | gptkbp:cannotBeRepulsive | true 
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                                | gptkbp:cannotBeShielded | true 
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                                | gptkbp:cause | gravitational waves attraction between masses
 
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                                | gptkbp:describedBy | gptkb:Newton's_law_of_universal_gravitation gptkb:Einstein's_general_theory_of_relativity
 
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                                | gptkbp:developedBy | gptkb:Albert_Einstein 
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                                | gptkbp:explains | black holes expansion of the universe
 gravitational lensing
 formation of galaxies
 free fall
 
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                                | gptkbp:formedBy | gptkb:Isaac_Newton 
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                                | gptkbp:hasConstant | G (gravitational constant) 
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                                | gptkbp:hasEquation | F = G * (m1*m2)/r^2 
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                                | gptkbp:hasUnit | newton (N) 
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                                | gptkbp:influenced | motion of celestial bodies structure of the universe
 time (gravitational time dilation)
 
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                                | gptkbp:isAlwaysAttractive | true 
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                                | gptkbp:isFundamentalForce | true 
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                                | gptkbp:isWeakestForce | true 
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                                | gptkbp:measures | gravitational constant newton (N)
 
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                                | gptkbp:mediatedBy | graviton (hypothetical) 
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                                | gptkbp:observedBy | gptkb:LIGO 
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                                | gptkbp:oneOfFourFundamentalForces | true 
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                                | gptkbp:predicts | gptkb:general_relativity 
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                                | gptkbp:propagatesAt | speed of light 
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                                | gptkbp:relatedTo | gptkb:energy gptkb:region
 gptkb:marina
 acceleration
 force
 
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                                | gptkbp:responsibleFor | tides planetary orbits
 weight of objects
 
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                                | gptkbp:studiedBy | gptkb:Albert_Einstein gptkb:Isaac_Newton
 
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                                | gptkbp:studiedIn | gptkb:astronomy physics
 
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                                | gptkbp:symbol | g 
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                                | gptkbp:type | tensor field (in general relativity) 
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                                | gptkbp:bfsParent | gptkb:Gravitationsfeldgleichungen gptkb:Tokyopop
 
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                                | gptkbp:bfsLayer | 7 
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                                | https://www.w3.org/2000/01/rdf-schema#label | Gravitation 
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