Genitive Case

Possessive nouns
 
Possessions
The car of Arthur 
Arthur's car

Family relationships
The sisters of Charles have got bikes 
Charles' sisters' bikes or Charles' sisters have got bikes.

Peter is the youngest brother of Linus and Lucy 
Peter is Linus' and Lucy's younger brother.

Two friends of Sue's.                 My sisters' children.

That man's book.                      Those boys' kite.

Mr Hill's records.                       My friends' clothes.

Places
St. Mary's (hospital)                 St. Peter’s (church)

the baker's (shop)                   the travel agent's (office)

Harrod's

Time expressions
Tonight's show