He was studying ancient documents and found the character '黃門'.

He sneaked into the school through the back gate.

This sluicegate is used to regulate the water level of the river.

His specialty is computer science.

I went to see the Arc de Triomphe in Paris.

He is deeply studying about the classification of superphylum in his biological research.

I am studying hard to get a scholarship for university.

He misrecognized her and spoke to her thinking she was someone else.

Mr. Atsumi is my best friend.

Since this is the first violation, please let it pass.