Lastly, the author uses the precedent of marijuana legalization in other countries as evidence that legalization does not solve any social problems, but instead creates them.
Author expresses negative opinion of legalizing marijuana
( z1 express :ARG0 ( z2 person :ARG0-of ( z3 author ) ) :ARG1 ( z4 opine :ARG0 z2 :ARG1 ( z5 legalize :ARG1 ( z6 marijuana ) ) :ARG0-of ( z7 negative ) ) )