In this chemical reaction, ammonium is produced.

In this chemical reaction, sodium plays an important role.

The atrium of this building is very spacious and bright.

He was caught by the police for jaywalking.

Hydra is one of the largest constellations in astronomy.

He claims to have seen an unidentified flying object.

We should always remember the power of Kannon in difficult times.

We went for a picnic to the lake on the weekend.

We had a picnic at the lake over the weekend.

Technetium is one of the most unstable elements in the periodic table.