# Introduction

In this unit you will:

* meet the characters from the popular American film “Grease”;
* learn about an interesting period in American history;
* learn to talk about the past using Past Simple.

To achieve the best result:

* watch the whole fragment from the film. It will help you understand the story and the examples in this unit;
* interact with the videos and answer the questions;
* do the video-activities and tasks after each video.

## **Let’s get started!**


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# Agent Instructions: Querying This Documentation

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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://english2.ed-era.com/grease.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
