question: Which type of weather fronts are responsible for severe weather such as gales , thunderstorms , hail , and heavy rain in Melbourne ?
answer: cold fronts
turker_answer: Cold fronts are responsible for severe weather such as gales , thunderstorms , hail , and heavy rain in Melbourne .
rule-based: Responsible for severe weather such as gales , thunderstorms , hail , and heavy rain in Melbourne are cold fronts .