Fundamental knowledge of mathematics is necessary to solve advanced problems.

We decided to establish a new organization.

I installed new software.

Gallium arsenide is a type of semiconductor, widely used in high-frequency electronic devices.

This dish is made with fresh ingredients.

Sofia is the capital of Bulgaria.

I eat pizza with my favorite chili sauce.

He is the main organizer of this event.

Oxygen, which is one of the chemical elements, is necessary for us to breathe.

My friend lives in Arkansas.