His intention was clear.

A neutron is part of an atomic nucleus.

Neutron stars are known for their density and strong gravity.

He is as stubborn as a head as hard as a stone.

This soil is lacking in lime, so it is necessary to add lime.

He works digging out coal.

What is his real name?

He was living alone in a small stone hut in the mountains.

Her ring was adorned with a beautiful garnet.

He started a fire using a flint.