Computer (Sprachunterricht) ; Computer (language teaching) ; CALL; E-learning; Mobile-assisted language learning; MALL ; English as a second language; ESL; TESOL ; Wortklassenerkennung, automatische; Word class assignment, automatic; Tagging (computational linguistics) ; Automatic word class assignment ; Concordance (computational linguistics) ; LDV; Linguistic data processing ; Sampling; Language corpus; Sprachkorpus; Datensammlung; Data collection; Textkorpus (method.) ; Text corpus (method.) ; Corpus linguistics