Much like the <e1>virus</e1> that caused the 1918 flu <e2>pandemic</e2>, this new H1N1 flu virus affects young adults and school children in greater numbers.
Much like the virus
Much like the virus that caused the 1918 flu pandemic, this new H1N1 flu virus affects young adults and school children in greater numbers.
<triplet> virus <subject> pandemic <object> Cause-Effect(e1,e2)