The answer is as follows:
The least contract may have number of provisions. The termination of lease clause dominates whatever the clauses may in the contract. it means, the the landlord may terminate the lease after 60 days from the notice of that the building has been sold. So the landlord may give notice of stating that the building has been sold and hence LEASE MAY BE TERMINATED after 60 days from the notice.
Hence it does not mean that he has to wait 60 days to terminate the lease. Writing of sale intimation enough to count 60 days