1. The ball of the dog.=The dog's ball.
2. The skateboard of that man.=That man's skateboard.
3. The songs of the musician.=The musician's songs.
4. The children of Peter.=Peter's children.
5. The umbrella of my grandmother.=My grandmother's umbrella.
6. The room of my brother.=My brother's room.
7. The questions of my son.=My son's question.
8. The wife of my brother. =My brother's wife.
9. The table of our teacher. =Our teacher's table.
10. The poems of Pushkin.=Pushkin's poems.
вроде так, удачи)