What is the return value of this function?

He is scheduled to come back in a week.

He disobeyed what his parents said.

All his actions can be said to be rebellious.

He disobeyed his parents and went his own way.

He defied his parents' opinion and chose his own path.

They began preparations to siege the castle.

They besieged the enemy's castle.

They defended in the castle against the enemy's attack.

My dream is to visit the Imperial Palace.