Brooking agreed to sell a tract of land to Dover Pool & Racquet Club, Inc., on which Dover planned to build a swim and tennis club. Neither party to the contract knew that just before the contract was signed, the local zoning board of the town in which the land was located published a notice of public hearings on a proposal to amend the zoning in a way that would have prevented Dover from using the land as it had planned to do. Will this contract be enforced?