Using punctuation marks correctly is important for understanding sentences.

This treaty was concluded to strengthen the friendly relations between the two countries.

I made a reservation at the restaurant.

We enjoy picnicking in this park year-round.

Mr. Aman is my best friend.

Makoto is my best friend.

This park is open to everybody.

The flags of all nations are fluttering in the wind.

Just in case he fails the exam, what should we do?

He is knowledgeable in all fields of learning.