Group sitting on a grassy hill resting .
Chances are about even that a group of people are sitting on a grassy hill and resting while they have a picnic lunch .
Chances are about even that a group of people are sitting on a grassy hill and resting while they have a picnic lunch .
There is almost no chance that a group of people are sitting on a grassy hill and resting while they have a picnic lunch .
A group of people are sitting on a grassy hill and resting while they have a picnic lunch .