Leo: Premise: "Two children play on a stone railing while a third catches a green ball."
Hypothesis: "Children are playing tag."
Do we know that the hypothesis entailed by the premise?
Mei: OK, So, let's think first...
Me:
Playing on a railing does not mean that you are playing tag. Many games could be played by two children on a railing.
Thus, the answer is it is not possible to tell.