My father works at a sawmill.

The development of fusion reactors could potentially be the key to solving future energy problems.

Linear programming is a part of operations research and is used to find the optimal solution.

Paying the urban planning tax is a citizen's duty.

The United Nations Environment Programme is providing solutions to global environmental problems.

He has claustrophobia and is afraid to ride in elevators.

My father is the president of the local chamber of commerce and industry.

He used a tent as a temporary quarters during his trip.

His grandfather was sent to a concentration camp during World War II.

We met at a dating agency and fell in love immediately.