A (digital comb filter) may pertain-to a hp-p3761.Logical formLearned from29 sentences. A version may pertain-to a filter.Logical formLearned from29 sentences. (Spam filters) may pertain-to persons.Logical formLearned from29 sentences. A person may need a filter.Logical formLearned from29 sentences. Filters can be disposable.Logical formLearned from29 sentences. A filter can be selective.Logical formLearned from28 sentences. Filters may manifest effectiveness.Logical formLearned from28 sentences. Filters may pertain-to an airline.Logical formLearned from28 sentences. A filter may pertain-to a journalist.Logical formLearned from28 sentences. An (oil filter) may pertain-to a person.Logical formLearned from28 sentences. A filter may be installed.Logical formLearned from28 sentences. Dozens can be constituted-of-or-filled-with filters.Logical formLearned from28 sentences. A life may pertain-to a filter.Logical formLearned from28 sentences. Filters may be applied.Logical formLearned from28 sentences. (Air filters) can be dirty.Logical formLearned from28 sentences.