Saudi Arabia, the biggest oil producer in the world, was once a supporter of Osama bin Laden and his associates who led attacks against the United States.
Iraq is the biggest oil producer in the world.
( z1 have-degree :ARG1 ( z2 country :name ( z3 name :op "Iraq" ) :ARG0-of ( z4 produce :ARG1 ( z5 oil ) ) ) :ARG2 ( z6 big ) :ARG3 ( z7 most ) :ARG5 ( z8 world ) )