There are some efficiencies that result when multiple systems are installed at one site.
Multiple systems on a site make things more efficient.
Multiple systems make things less efficient.
Road workers are in a restaurant eating burgers.
Gore's submission of a paperback to an independent lab was unquestioned.
The analysis of NOx, SO2, mercury and CO2 showed an increase in electricity prices.
Christopher Columbus was born in Genoa.
It's called an oak because of the leaves thing on it.
A girl is riding a horse.