Three female roller-derby players are aggressively skating.
The roller derby is intense.
The three young girls ice skated.
Giles sounds like a terrible person.
The story talked post-apocalyptic life in America.
You have to use special techniques to aggregate the quantitative information in case studies.
She thought that it was a waste to buy fifty dollar tennis shoes.
The case study described means of aggregating findings.
The people are standing by engineering equipment.