A filter may function.Logical formLearned from9 sentences. Filters may be analyzed.Logical formLearned from9 sentences. A person may buy a filter.Logical formLearned from9 sentences. A purpose may pertain-to a filter.Logical formLearned from9 sentences. A (mirror filter) can be hot.Logical formLearned from9 sentences. Filters can be at fault.Logical formLearned from9 sentences. Pores may pertain-to a filter.Logical formLearned from8 sentences. Filters can be filters.Logical formLearned from8 sentences. An absence may pertain-to a filter.Logical formLearned from8 sentences. A body may pertain-to a filter.Logical formLearned from8 sentences. A filter can be cold.Logical formLearned from8 sentences. Filters can be transparent.Logical formLearned from8 sentences. A manufacturer can be constituted-of-or-filled-with filters.Logical formLearned from8 sentences. A filter can be a low-pass filter.Logical formLearned from8 sentences. A filter can be rectangular.Logical formLearned from8 sentences.