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isotope (aspect of technetium) → HasProperty → radioactive	0.73
technetium → HasA → half-life of about 6 hours	0.68
technetium → HasA → the atomic symbol tc	0.64
technetium → ReceivesAction → used as radioactive imaging agent	0.64
technetium → HasA → half-life of 210,000 years	0.64
technetium → ReceivesAction → produced	0.61
technetium → HasA → stable isotopes	0.41
technetium → HasProperty → radioactive	0.41
organic compound (subgroup of compound) → HasA → technetium	0.34
technetium → IsA → a chemical element	0.25
technetium → HasProperty → unstable	0.16
isotope (aspect of technetium) → HasProperty → stable	0.00