A child is in a ball pit while three adults watch her .
It is improbable that a child is at a birthday party in a ballpit while the parents supervise her .
It is improbable that a child is at a birthday party in a ballpit while the parents supervise her .
There is a very good chance that a child is at a birthday party in a ballpit while the parents supervise her .
A child is at a birthday party in a ballpit while the parents supervise her .