19. The computer-implemented method of claim 18 , further including: retrieving first content items related to the query from a content database; determining, a number of times the first quote appeared in the first content items; and determining a frequency score for the first quote based on the number.
19. The computer-implemented method of claim 18 , further including: retrieving first content items related to the query from a content database; determining, a number of times the first quote appeared in the first content items; and determining a frequency score for the first quote based on the number. 20. The computer-implemented method of claim 19 , further including: determining a quote score based on at least one of the relevance score, the recency score, and the frequency score.