Input (grade 13): It is the third-largest land mammal by weight (between 1 Â 1\/2 and 3 tonnes), behind the white rhinoceros (1 Â 1\/2 to 3 Â 1\/2 tonnes) and the three species of elephant (3 to 9 tonnes).
Output (grade 7): It is the third largest land mammal, judging by its weight, which is between between 1 Â 1\/2 and 3 tonnes. The white rhinoceros weighs 1 Â 1\/2 to 3 Â 1\/2 tonnes, and the three species of elephant weigh 3 to 9 tonnes.