Branch(branchno,street,city,postcode)

Staff(staffno,fname,lname,position,sex,dob,salary,branchno)

PrivateOwner(ownerno,fname,lname,address,telno,email,password)

PropertyForRent(propertyno,street,city,postcode,type,rooms,rent,ownerno,staffno,branchno)

please draw 3 query plans (trees) for

select s.fname, b.city, p.rent, po.telno

from Starr s, Branch b, PropertyForRent p, PrivateOwner po

where s.branchno=b.branchno and p.branchno=b.branchno and

po.ownerno=p.ownerno and b.city='London';