A combination can be constituted-of-or-filled-with (sampling methods).Logical formLearned from6 sentences. Some sampling may be conducted.Logical formLearned from6 sentences. Contaminants may undergo a sampling.Logical formLearned from6 sentences. An objective may pertain-to a sampling.Logical formLearned from6 sentences. Quotations may undergo a sampling.Logical formLearned from6 sentences. A sampling can be structured.Logical formLearned from6 sentences. Experiences may undergo a sampling.Logical formLearned from6 sentences. A sampling may be described.Logical formLearned from6 sentences. (Air sampling) may be performed.Logical formLearned from6 sentences. A sampling can be invasive.Logical formLearned from6 sentences. Fiction may undergo a sampling.Logical formLearned from6 sentences. A sampling can be stratified.Logical formLearned from6 sentences. A river may undergo a sampling.Logical formLearned from6 sentences. Files may undergo a sampling.Logical formLearned from6 sentences. Scientists may undergo a sampling.Logical formLearned from6 sentences.