I will be in charge of deciding where people sit at the party.

Phosphophyllite is a beautiful green mineral that is also used as jewelry.

My parents are good at cooking.

He came forward and expressed his opinion.

Five ships are anchored in the harbor.

I learned how to calculate definite integrals in math class.

The calculation of the antiderivative is a fundamental part of calculus.

This ring is made of lazurite.

This volcanic rock contains a lot of olivine.

He suffered for a long time due to tabes dorsalis.