Question: How many city-based franchises are featured in the competition of which the "2016–17 Cool & Cool Present Jazz National T20 Cup" was the thirteenth season?
Sentence (from "2014–15 Haier T20 Cup"): The tournament started on September 17, 2014 at Karachi which was relocated from Multan due to torrential rains and flooding in Punjab.
Relevant evidence: No