We already know ignorance, heat, <e1>boredom</e1>, greed and poverty cause <e2>violence</e2> even in the U.S.
We already know ignorance,
We already know ignorance, heat, boredom, greed and poverty cause violence even in the U.S.
<triplet> boredom <subject> violence <object> Cause-Effect(e1,e2)