Man sitting on a wire while crowd on the street looks.
There is a crowd on the street.
The street is empty.
The girl is wearing a red tank top and a purple skirt
a man looks at beakers
People are sitting at an office table.
Backfill techniques can be used to gather information on a case study so that it can be analysed in conjunction with other studies.
People shopping.
A woman is doing her morning jog.