Teacher:Given a text, write a compressed version of it in a single sentence.
Teacher: Now, understand the problem? Solve this instance: "Explainer was humming along just great, hitting the nails on the head, until the last sentence: ""And a browser's source code is only a fraction of the size of that of an operating system."""
Student:
"Explainer was humming along just great, hitting the nails on the head, until the last sentence."