Teacher:You are given a sentence and your task is to generate another sentence that supports the given input.
Teacher: Now, understand the problem? Solve this instance: In the Mesozoic era life recovered and familiar forms such as mammals and birds evolved, however the world was dominated by the reptiles, specifically the dinosaurs , which occupied most of the niches now occupied by mammals and some birds.
Student:
Dinosaurs filled the niches that mammals fill today during the mesozoic era.