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Which sentence contains an essential relative clause?
The dog, whom I adore, jumped the highest.
The dog, which jumped the highest, won the medal.
The medal, which looked like a bone, was won by the dog.
The dog that jumped the highest won the medal.
Which sentence contains an essential relative clause?
The dog, whom I adore, jumped the highest.
The dog, which jumped the highest, won the medal.
The medal, which looked like a bone, was won by the dog.
The dog that jumped the highest won the medal.