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sclass Element {
  double weight = 1;
  L<Element> children;
  
  S plusWeight(S s) {
    ret weight == 1 ? s : s + " [" + formatDouble(weight, 2) + "]";
  }
}

sclass ChooseCategory extends Element {
  AI_BottomUpParser1.Word word;
  L<S> categories;
  
  *(AI_BottomUpParser1.Word *word, L<S> *categories) {}

  toString { ret plusWeight(word.text() + " (" + n2(categories, "category", "categories") + ")"); }
}

sclass ChooseReconstruction extends Element {
  AI_BottomUpParser1.Word word;
  L<ai_Reconstructed> reconstructions;
  
  *(AI_BottomUpParser1.Word *word, L<ai_Reconstructed> *reconstructions) {}

  toString { ret plusWeight(word.text() + " as " + category() + " (" + n2(reconstructions, "reconstruction") + ")"); }
  
  // Should only be one?
  S category() { ret joinWithComma(map(func(ai_Reconstructed r) -> S { r.production.c }, reconstructions)); }
}

sclass HaveCategory extends Element {
  AI_BottomUpParser1.Word word;
  S category;
  
  *(AI_BottomUpParser1.Word *word, S *category) {}
  
  toString { ret plusWeight(quote(word.text()) + " as " + category); }
}

sclass ChoosePart extends Element {
  ai_Reconstructed reconstruction;
  
  *(ai_Reconstructed *reconstruction) {}
  
  toString { ret plusWeight(reconstruction.a.text() + " + " + reconstruction.b.text()); }
}