R/a_10.R

In omstuhler/semgram: Extracting Semantic Motifs from Textual Data

#' @importFrom rsyntax annotate_tqueries cast_text children NOT OR not_children parents tquery
NULL

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##### Rule: Verb with xcomp clause and noun conjunct
##### Example: "Jack and ENTITY want to eat." (eat)
##### Note: not_children inserted in order to avoid passiveness.

a_10 = function(tokens, entities, verb_pos, agent_patient_pos, extract){
  rule = tquery(OR(token = entities, appos_child = "appos_child"), relation = "conj",
                label = "Entity", fill = F,
                parents(pos = c("PROPN", "NOUN", "PRON"), relation = "nsubj",
                        parents(pos = c("VERB", "AUX"),
                                children(pos = "VERB", relation = "xcomp",
                                         not_children(pos = "AUX", lemma = "be", relation = "auxpass"),
                                         not_children(relation = "nsubj"),
                                         label = "action", fill = F,
                                         children(pos = "VERB", relation = "conj", req = F,
                                                  not_children(pos = "AUX", lemma = "be", relation = "auxpass"),
                                                  not_children(relation = "nsubj"),
                                                  label = "action", fill = F)
                                )
                        )
                )
  )

  tokens = annotate_tqueries(tokens, "query", rule, overwrite = T, copy = F)

  if(all(is.na(tokens$query))){
    casted = data.table(doc_id = character(), ann_id = factor(), Entity = character(), action = character())
  } else {
    casted = cast_text(tokens, 'query', text_col = extract)
  }
  return(casted)
}