a man with a backpack staring to the camera on a yellow abstract background
The man with the backpack is looking at a yellow background.
The man is laying down asleep.
A little blond person is sitting on the floor in a living room.
Nobody is talking.
Obligations are the services or products to get delivered or awarded.
The people are outside.
There was an increase in the development contract target price from 1995-1999.
Case studies performed by different researches using different techniques cannot be compared or combined to reach useful conclusions.