There is a football under the table, and it is the football of theirs, they love playing football
There is a football under the table and it is theirs. They like playing football.
Under the desk have a football,there are boys's football,boys like play football.
There's a football under the desk.
The football is theirs.
They like playing football.
there is a football under the table ,which is their's .they love playing football .
较简洁的一种译法:They who love playing football have one under the desk.