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black hole → HasA → an event horizon	0.69
event horizon (aspect of black hole) → IsA → the boundary	0.64
event horizon (aspect of black hole) → IsA → the point	0.60
event horizon (aspect of black hole) → CapableOf → get larger	0.47
event horizon (aspect of black hole) → CapableOf → surround black hole	0.45
event horizon (aspect of black hole) → HasProperty → big	0.43
event horizon (aspect of black hole) → ReceivesAction → reached	0.43
event horizon (aspect of black hole) → HasProperty → visible	0.41
event horizon (aspect of black hole) → HasProperty → spherical	0.41
event horizon (aspect of black hole) → CapableOf → swell larger than the apparent horizon	0.38
event horizon (aspect of black hole) → HasA → enormous effect	0.38
event horizon (aspect of black hole) → ReceivesAction → formed	0.38
event horizon (aspect of black hole) → HasProperty → real	0.34
event horizon (aspect of black hole) → CapableOf → call the ergosphere	0.25
event horizon (aspect of black hole) → CapableOf → become smaller than the apparent horizon	0.25
event horizon (aspect of black hole) → CapableOf → compounded by gravitational bending of light	0.25
event horizon (aspect of black hole) → IsA → about 25 billion miles	0.25
event horizon (aspect of black hole) → IsA → less than 4 miles	0.25