!7

sS correct = [[
Who
Who is boy
Who is nice boy
Who is this boy
Who is this nice boy
]];

p-exp {
  S s = "Who is this nice boy";
  PTElement root = ai_parseBottomUpToTree(s);
  L<S> l = asList(ai_parseTree_simplifiedTexts(root));
  pnl(l);
  assertEqualsVerbose(tlft(correct), trimAll(l));
}