11. One or more computer-readable media as recited in claim 5 , wherein the filtering of the first corpus of phrases further comprises: determining a readability of each of multiple phrases of the first corpus of phrases; and filtering out a phrases of the first corpus of phrases based at least in part on the determined readability of the multiple phrases.
12. One or more computer-readable media as recited in claim 11 , wherein the readability of the multiple phrases is determined based on a Flesch-Kincaid Index or a Coleman-Liau Index.