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isotope (aspect of thorium) → HasA → half-life	0.78
thorium → HasProperty → radioactive	0.68
thorium → ReceivesAction → used as fuel	0.60
thorium → HasProperty → fertile	0.60
thorium → HasProperty → common	0.56
thorium → HasProperty → more abundant than uranium	0.56
thorium → ReceivesAction → extracted	0.55
thorium → HasProperty → safer	0.53
thorium → HasProperty → abundant	0.52
thorium → ReceivesAction → used as nuclear fuel	0.52
thorium → CapableOf → occur in thorite	0.50
isotope (aspect of thorium) → ReceivesAction → produced	0.49
thorium → ReceivesAction → found as thorium-232	0.49
thorium → IsA → element	0.49
thorium → CapableOf → occur in monazite	0.45
thorium → CapableOf → absorb neutron	0.45
thorium → HasProperty → more abundant	0.44
thorium → HasProperty → recoverable	0.43
thorium → ReceivesAction → used as alloying element	0.42
thorium → ReceivesAction → mixed with enriched uranium	0.42
thorium → ReceivesAction → discovered in 1828	0.40
thorium → CapableOf → replace uranium	0.40
thorium → CapableOf → tarnish in air	0.40
thorium → HasProperty → cheap	0.39
thorium → HasProperty → silvery	0.38
thorium → HasProperty → dimorphic	0.38
thorium → CapableOf → form thorium dioxide	0.38
mineral → HasA → thorium	0.36
thorium → ReceivesAction → mined	0.36
thorium → ReceivesAction → stored	0.36
granite → HasA → thorium	0.33
thorium → HasProperty → dense	0.33
thorium → ReceivesAction → attacked by water	0.33
thorium → ReceivesAction → refined as a by-product	0.29
thorium → ReceivesAction → converted to uranium-233	0.29
thorium → HasA → low work-function	0.29
thorium → HasA → high electron emission	0.29
thorium → CapableOf → decay into lead	0.29
thorium → AtLocation → soil	0.29
thorium → HasProperty → perfect	0.29
thorium → HasProperty → efficient	0.29
thorium → HasProperty → exciting	0.29
rock → HasA → thorium	0.27
thorium → CapableOf → found application	0.27
thorium → ReceivesAction → contaminated with the oxide	0.27
thorium → ReceivesAction → produced by the decay of uranium	0.25
thorium → ReceivesAction → deposited in the sediment	0.25
thorium → CapableOf → occur in several minerals	0.25
thorium → IsA → electropositive actinide	0.25
thorium → HasProperty → cleaner	0.25
thorium → AtLocation → india	0.25
thorium → AtLocation → the earth’s crust	0.25
thorium → CapableOf → decay into various other short-lived radioactive elements	0.25
thorium → AtLocation → water	0.25
thorium → HasA → half-life of 14 billion years	0.25
thorium → ReceivesAction → irradiated	0.25
isotope (aspect of thorium) → AtLocation → trace amounts	0.25
isotope (aspect of thorium) → ReceivesAction → known with mass numbers	0.25
isotope (aspect of thorium) → CapableOf → help cure certain cancers	0.25
zircon → HasA → thorium	0.25
thorium → ReceivesAction → mixed with plutonium	0.16
thorium → ReceivesAction → proven to add as alternative	0.16
thorium → CapableOf → produce radioactive waste	0.16
thorium → HasA → longer fuel cycle	0.16
thorium → CapableOf → produce less waste	0.16