Researchers have found significant associations using both types of studies.
There are at least two types of studies used.
There have been no associations found when using both types of studies.
A woman laughs in joy.
I wish I could do a year of community service again.
the man is walking on the moon
The people are gathered around the pool table.
A school band is  in white, yellow, red and black uniforms.
Three men work on a skating rink.