sentences: a robin is a kind of animal & a cricket is a kind of animal ->  a robin and a cricket are kinds of animals  a robin and a cricket are kinds of animals & if an animal eats other animals for food , then the animal will be the predator & a robin eats a cricket ->  a robin is a predator to the cricket  a robin is a kind of animal & a cricket is a kind of animal ->  a robin and a cricket are kinds of animals  a robin and a cricket are kinds of animals & a robin eats a cricket & if an animal is eaten by other animals , then the animal will be the prey ->  the cricket is a prey to the robin  a robin is a predator to the cricket & the cricket is a prey to the robin -> the robin is the predator and the cricket is the prey