He is studying the shape of the skull.

He found a cowry on the beach.

His self-willedness sometimes troubles the people around him.

He was considering suicide, but with the help of a friend, he abandoned that thought.

Driven into a desperate situation, he chose to commit suicide.

Excessive use of smartphones can potentially lead to undesirable effects such as decreased vision.

We enjoyed a picnic outside of the city.

My father likes to tell dad jokes.

He made travel plans using a globe.

He is using an octant for navigation.