A hippo is shorter than a giraffe.
Grandson is younger than grandfather.
A mouse is smaller than a dog.
A worm is shorter than a snake.
My apple is worse than your apple.
Russia is colder than Africa.
Australia is hotter/warmer than Antarctica.
Whales are bigger than ants.
Boys are taller than girls.
Strawberry ice cream is better than peach ice cream.
That pencil is longer than this pen.
My brother is older than my sister.
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