Sentence:  Benoit Rouquayrol (a French mining engineer) and Auguste Denayrouze (a French naval officer) invented the <WSD>aerophore</WSD> in 1865. Their creation is considered the source of modern scuba equipment. 
Meaning of the word marked with <WSD> tags:  A predecessor of the aqualung, invented by Benoit Rouquayrol and Auguste Denayrouze 1865