Groups of people skateboarding on the street are holding onto cars.
Groepen mensen die op straat skateboarden houden auto's vast.
A skateboarder is laying in the grass
Een skateboarder ligt in het gras
There is either one or many subjects. Laying is different from skateboarding. The street wouldn't have grass.
Er is één of veel onderwerpen. Lagen is anders dan skateboarden.