A woman is holding her child while a man is reading something from a piece of paper and taking something from a bowl that a younger girl is holding in a park with a small lake in the background.
The people are swimming in the lake.
If the people are swimming, then it not possible for them to be engaged in activities like reading, holding a child or holding a bowl.
If people are swimming they are not reading.
People  at a park is different than people swimming.