Sampling; Language corpus; Sprachkorpus; Datensammlung; Data collection; Textkorpus (method.) ; Text corpus (method.) ; Corpus linguistics ; Language statistics ; Validity (method.) ; Evaluation criterion (method.) ; Techniques (in research) ; Research techniques ; Explanation (philosophy of science) ; Hypothesis forming ; Modellbildung; Idealisierung (method.) ; Idealization (method.) ; Theory building