There are either two young children or a child with an adult. The pair can't be climbing a tree and playing in the lake at the same time.


Context: Two young children, one wearing a blue shirt and something on their head climbing a tree standing in front of a body of water.
Hypothesis: A child wearing a blue shirt and something on their head, is playing in the lake, with an adult, under the shade of the tree.

Given this context, determine if the hypothesis is true (Yes, no, or unknown)?