extrasolar planet subgroup of planet, 9 assertions
CapableOf 1
orbit star 0.69
HasProperty 3
habitable 0.30
common 0.25
massive 0.16
IsA 1
planet 0.55
ReceivesAction 4
discovered 0.66
discovered to date 0.61
discovered in 1992 0.43
confirmed 0.41