Ordered that the order is affirmed insofar as appealed from, with costs.
The Supreme Court properly determined that there was no evidence demonstrating that the defendant was responsible for the wet condition of the slide where the infant plaintiff was injured. The defendant made a prima facie showing of its entitlement to summary judgment, thereby shifting the burden to the plaintiffs to establish the existence of a material issue of fact to preclude the granting of summary judgment ( see, Zuckerman v. City of New York, 49 N.Y.2d 557). The affidavit of the plaintiffs' expert averring that the defendant was responsible for the wet condition of the slide was not based on any evidence in the record and, hence, his conclusion was purely speculative and failed to create any issue of fact ( see, Glorioso v. Schnabel, 253 A.D.2d 787; Mendes v. Whitney-Floral Realty Corp., 216 A.D.2d 540). Thus, liability cannot be imposed on the defendant, which "merely furnished the condition or occasion for the occurrence of the event", and was not one of its causes ( Shatz v. Kutshers Country Club, 247 A.D.2d 375).