He thinks that war is a necessary evil.

She always keeps close to him.

He lost everything.

She is planning a date with her current boyfriend.

My boyfriend gave me a gift.

Everyone was surprised by the news.

My grandfather recently started participating in the Internet Elderly Association.

I am majoring in information science.

Information retrieval technology is essential for finding necessary information from a large amount of data.

Information theory is a field of study that mathematically analyzes the amount of information and the efficiency of its transmission.