Question: What is the major service/product output of this city in the Indian state of Kerala where the headquarters of Kerala Fire And Rescue Services are located?
Sentence (from "Kerala Fire and Rescue Services Academy"): Kerala Fire and Rescue Services Academy (Malayalam:കേരള ഫയര്‍ ആന്‍റ് റെസ്ക്യൂ സര്‍വ്വീസസ് അക്കാദമി) is situated in Ramavarmapuram in Thrissur city, Kerala of India.
Relevant evidence: No