(Recreation facilities) can be passive.Logical formLearned from3 sentences. Electrical components can be passive.Logical formLearned from3 sentences. A (missile guidance system) can be passive.Logical formLearned from3 sentences. Combiners can be passive.Logical formLearned from3 sentences. A (target classification) can be passive.Logical formLearned from3 sentences. A (guidance system) can be passive.Logical formLearned from3 sentences. A diffusion can be passive.Logical formLearned from3 sentences. Transducers can be passive.Logical formLearned from3 sentences. An imperative can be passive.Logical formLearned from3 sentences. An appliance can be passive.Logical formLearned from3 sentences. Vegetarians can be passive.Logical formLearned from3 sentences. Sonobuoys can be passive.Logical formLearned from3 sentences. An electroreception can be passive.Logical formLearned from3 sentences. An infrared seeker can be passive.Logical formLearned from3 sentences. A (phase detection) can be passive.Logical formLearned from3 sentences.