Himemiko is my best friend.

He is overseeing the project.

This problem is too simple.

What is this pot used for?

The nurse treated my wound.

The Great Kanto Earthquake occurred in 1923, and many people were affected by it.

This software has forward compatibility.

This software maintains backward compatibility.

An intercontinental ballistic missile is a weapon with a very large destructive power.

Functional analysis is a branch of mathematics that studies the properties of functions in infinite-dimensional spaces.