Look at the following picture and answer the question.

Source: vectorstock.com

1. A child is playing slides in a park.
2. Two children are playing sand in the park.
3. A boy is flying a kite in the park.
4. A boy is riding a bicycle in the park.
5. Two children are playing with a ball in the park.
6. A mother is sewing in the park.

The correct statements about the picture shown above are number ....