You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "what is the front part of a train called?" whose answer is locomotive.
Each document should contain about 30 words, and these documents should contain useful information.

Query: front part of a train called
Useful Output:

Doc 1: Foreign Ministry Spokesperson Guo Jiakun's Regular Press Conference on April 25, 2025.
Doc 2: The front of a train is commonly referred to as the "locomotive" or "engine." This critical component is responsible for providing the power necessary to move
Doc 3: When a train arrives, look at the destination shown on the front and side signs, and decide whether to board. Please let exiting passengers leave the train
Doc 4: The front of a train is called the locomotive, a powerful machine responsible for pulling the entire train along its tracks.
Doc 5: What are the main parts of a steam locomotive train? · Headlamp – Projects light at the front of the locomotive. · Marker Jewel – Also called