Concepts: organism, system, type
A: there are major types of organisms in aquatic systems
Concepts: customer, supermarket, vegetable
A: a horrified customer discovered a giant caterpillar inside a vegetable he bought from a supermarket
Concepts: enter, sea, surfer
A: lone surfer enters the sea
Concepts: grass, lie, umbrella
A:
A badly battered umbrella lying on the grass