Teacher:In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Teacher: Now, understand the problem? Solve this instance: The coast is where land meets the sea .
Student:
The coast , also known as the coastline or seashore , is the area where land meets the sea or ocean , or a line that forms the boundary between the land and the ocean or a lake .