If AltaVista's list of search refinements was generated by a human, for instance, it might be more helpful.
If AltaVista's list of search refinement suggestions were human-generated, they would be exponentially less effective.
mnli hypothesis: If AltaVista's list of search refinement suggestions were human-generated, they would be exponentially less effective. premise: If AltaVista's list of search refinements was generated by a human, for instance, it might be more helpful.