He opened the manhole and checked the sewer.

He is talking about something specialized that a commoner cannot understand.

The janitor cleans the building every day.

Eating human meat is prohibited by law.

He is active as a Liberal Democratic Party member.

He is a Tokyoite, both by birth and upbringing.

He is a person from Kansai, so he speaks in Kansai dialect.

He is my friend.

He worked as a middleman in that transaction.

This company values harmony among people.