In the following situations, certain events take place after the contracts are formed. Discuss whether each of these contracts is discharged because events render the contracts impossible to perform:

Oppenheim contracts to sell you one thousand bushels of apples from her orchard. Because of a severe frost three weeks later, the crop is destroyed and she is unable to deliver the apples.

Maxwell contracts to lease a service station for ten years. His principal income is from the sale of gasoline. Because of an oil embargo by foreign oil producing nations, gasoline is rationed, cutting sharply into Maxwell's gasoline sales. He cannot make his lease payments. Can he cancel the lease?