Two persons are standing and doing their work in the laboratory.
Two people are in a room.
A daycare with children.
The boarder in red struck a pose.
The man is fasting for a religious holiday.
These controls will not call for comparisons
The people are having some fun in the pool.
A woman is looking up.
Chekhov's health in contrast to his attitude was one of the few things in his life that made sense.