Children playing in front of a sign for the `` Hartman Prehistoric Garden '' .
There is a very good chance that some children are having fun near a sign for the `` Hartman Prehistoric Garden '' .
There is a very good chance that some children are having fun near a sign for the `` Hartman Prehistoric Garden '' .
It is improbable that some children are having fun near a sign for the `` Hartman Prehistoric Garden '' .
Some children are having fun near a sign for the `` Hartman Prehistoric Garden '' .