Sentence:  Furthermore, this increase in risk is comparable to the risk of death from leukemia after long-term exposure to <WSD>benzene</WSD>, another solvent, which has the well-known property of causing this type of cancer. 
Meaning of the word marked with <WSD> tags:  An aromatic hydrocarbon of formula C<sub>6</sub>H<sub>6</sub> whose structure consists of a ring of alternate single and double bonds.