10. The system of claim 9 , wherein the determination of the at least one relationship is based on determining a measure of relatedness based on a collection of relationship distances of entities, wherein the entities include at least one of (a) a content item, (b) an element of the at least one previous search, and (c) an element of the present input, and wherein the relatedness measure is based on one of the relationship distances.
10. The system of claim 9 , wherein the determination of the at least one relationship is based on determining a measure of relatedness based on a collection of relationship distances of entities, wherein the entities include at least one of (a) a content item, (b) an element of the at least one previous search, and (c) an element of the present input, and wherein the relatedness measure is based on one of the relationship distances. 14. The system of claim 10 , wherein the relationship distances are modified by user preferences acquired over time.