en ventilation (n, artifact)
― IsA ⟶
Weight: 2.0
en mechanical system (n, artifact) Source: Open Multilingual WordNet
en ventilation (n, act)
― IsA ⟶
Weight: 2.0
en improvement (n, act) Source: Open Multilingual WordNet
en ventilation (n)
― IsA ⟶
Weight: 1.0
en management or evaluation event (n) Source: OpenCyc 2012