question: What was the nickname given to the city of New Haven due to an indigenous tree which largely perished in the mid-20th century ?
answer: `` Elm City ''
turker_answer: The nickname given to the city of New Haven due to an indigenous tree which largely perished in the mid-20th century was `` Elm City '' .
rule-based: The nickname given to the city of New Haven due to an indigenous tree which largely perished in the mid-20th century was `` Elm City .