A purity may pertain-to a (carrier gas).Logical formLearned from2 sentences. A person can be a symbol of purity.Logical formLearned from2 sentences. A character can be of a purity.Logical formLearned from2 sentences. A purity of motive may command confidence.Logical formLearned from2 sentences. A purity may pertain-to sources.Logical formLearned from2 sentences. An ideology may be centred on a purity of a race.Logical formLearned from2 sentences. A purity may pertain-to a service.Logical formLearned from2 sentences. A purity can be clerical.Logical formLearned from2 sentences. An (or purity) may pertain-to a nobleman.Logical formLearned from2 sentences. An analysis of (oxygen levels) can be key to determination of (surface water purity).Logical formLearned from2 sentences. A purity may pertain-to rocks.Logical formLearned from2 sentences. A purity of rocks can be such that something-is-the-case.Logical formLearned from2 sentences. A mixture can be constituted-of-or-filled-with purity.Logical formLearned from2 sentences. Purity may pertain-to materials.Logical formLearned from2 sentences. Fighters may be characterised by purity of arms.Logical formLearned from2 sentences.