This group of young people is happy about cleaning up.
The group is cleaning.
The group of young people are angry.
The man is at the river
Men are looking through CDs
All of these players tend to be arrogant and believe that the end justifies the means.
The amount of steel required for ductwork can be lowered with a more efficient design.
The skateboarders are experienced.
Wroclaw was in Germany before World War II, but in Poland after the war.