The above considerations might not seem intuitive at first glance, as the average polysemy of longer queries is lower (17.9 on AMBIENT vs. 6.7 on MORESQUE according to our gold standard).
we note that while the kind of ambiguity of 1-word queries is generally coarser (e.g., beagle as dog vs. lander vs. search tool), with longer queries we often encounter much finer sense distinctions (e.g., Across the Universe as song by The Beatles vs. a 2007 film based on the song vs. a Star Trek novel vs. a rock album by Trip Shakespeare, etc.).