4. The system of claim 1 , wherein the matching module is further configured to: determine a second similarity value between the second text interval and the first text interval, find the second text interval redundant to the first text interval in response to the first and second similarity values each exceeding respective thresholds, and refrain from outputting redundant text intervals.
5. The system of claim 4 , wherein determining the first similarity value and the second similarity value comprises performing a two-way comparison between the first and second intervals.