extractLabels(spanToLabels, tokens, lines[i]);
}
// TODO: add an option which treats the spans as constraints when parsing
Tree tree = parser.apply(tokens);
Tree binarized = binarizer.transformTree(tree);
Tree collapsedUnary = transformer.transformTree(binarized);
// if there is a sentiment model for use in prelabeling, we
// label here and then use the user given labels to adjust