Discard lines whose codes do not occur in the Warlpiri dictionary skeleton grammar

skeletonise_df(wlp_lexicon,
  grammar_file = system.file("structures/wlp_skeleton-simple.ne", package =
  "yinarlingi"))

Arguments

wlp_lexicon	a Warlpiri lexicon data frame, or path to a Warlpiri dictionary file
grammar_file	a Nearley grammar file (default is `wlp_skeleton-simple.ne`)