Action by owners of lots shown on a subdivision map for a judgment declaring that the property owned by respondent in the subdivision is open for park purposes to all parties owning any part of the premises shown on said map and their families for use as a public park, to enjoin respondent from interfering with such use, and for other relief. Appellants’ claim is under a declaration filed by the developer, and recorded in the Westchester County Clerk’s office on September 2, 1939, which dedicates certain designated parcels on said map as “ parks ” and “ for the purpose of public parks ” and provides that the covenants and restrictions set forth therein shall run with the land and shall be binding on the developer and all persons claiming under it until July 1, 1965, with provisions for automatic extensions for successive periods of ten years unless, by instrument executed by the majority of the then owners of all the premises, the covenants are changed in whole or in part. The answer pleads three affirmative defenses, the first of which asserts that respondent’s
