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dark energy (subgroup of energy) → IsA → hypothetical form of energy	0.68
universe → MadeOf → dark energy	0.54
dark energy (subgroup of energy) → CapableOf → expand the universe	0.53
dark energy (subgroup of energy) → CapableOf → permeate all of space	0.42
dark energy (subgroup of energy) → CapableOf → remain constant	0.34
dark energy (subgroup of energy) → CapableOf → become strong	0.25
dark energy (subgroup of energy) → CapableOf → overcome electrical and nuclear forces	0.25
dark energy (subgroup of energy) → CapableOf → end the universe	0.25
dark energy (subgroup of energy) → CapableOf → dissipate with time	0.25
dark energy (subgroup of energy) → HasA → strong negative pressure	0.25
dark energy (subgroup of energy) → HasProperty → cosmological constant	0.25
dark energy (subgroup of energy) → HasProperty → necessary	0.25