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dental cavity (subgroup of cavity) → IsA → common problem	0.59
insomnia → IsA → common problem	0.47
depression → IsA → common problem	0.40
trigger finger (subgroup of finger) → IsA → common problem	0.32
black mold (subgroup of mold) → IsA → common problem	0.31
spider vein (subgroup of vein) → IsA → common problem	0.26
wet basement (subgroup of basement) → IsA → common problem	0.19
window condensation (subgroup of condensation) → IsA → common problem	0.16