Ishiwara-san is my best friend.

Ishizawa is my best friend.

The walls of this building are made of lime.

He was able to lift the chikaraishi.

He works digging out coal.

He is good at hunting using a crossbow.

He accidentally rode his bicycle onto the curb.

He used stepping stones to cross the river.

He starts talking about himself at every opportunity, causing trouble for the people around him.

He tripped over the pebble at his feet.