For the occurrence or non-occurrence of an event, how about if we go with my broker example? Sam is a broker for a large commercial real estate brokerage firm, For Rent. He brings prospective lessees together with lessors who have available space for rent. Sam successfully brokers a deal for a lessor to rent a large space in downtown Manhattan on 2/15/22. The contract with the lessor states that For Rent will earn 50% of its fee when a lease is executed and 50% of the fee when the lessor receives the security deposit from the lessee. For Rent's total fee is $2 million. The lease will commence on 2/15/23, and the security deposit is typically paid 30 days before the lease commences. Questions: 1) At what point has for Rent satisfied its performance obligation? 2) What is the transaction price of the contract? 3) How much revenue can For Rent recognize in 2022? 4) What would your answer be if the fee structure was 50% upon lease execution and 50% upon receipt of a city-granted building permit, which is typically obtained 30 days before lease commencement