In question 19 above, the contract requires the building to be and ready for Bill on June 30, 2014. On that date Bill is to give the remainder of the money owed and will receive the keys to the finished building.Bill hears from a friend that John has moved.He goes by John's house and office and both are empty.He cannot reach John by phone or email, and John does not show up at the job site. Does Bill have to wait until June 30, 2014 before he can consider this contract to be breached?If not, what is this called?