Two friends have sorted the butterflies by color. Who sorted them correctly?
This row of butterflies has been sorted correctly. The column is called red. And the butterflies in the column are both red. The title of this column is orange. But the butterflies in the column are green. So, this column has not been sorted correctly. And the column which had contained green butterflies contains orange butterflies. These butterflies need to be swapped over. They’re in the wrong place.
Let’s see if the second friend is correct. This is the column for red butterflies. Both the butterflies are red. This column should contain orange butterflies. And it does. And this column should contain the green butterflies. It does. So, this is the friend who sorted the butterflies correctly.