For example, many children already know that marijuana is a useful medicine for some people.
(many children; know; that marijuana is a useful medicine for some people; T:already) Context(many children know,List([13, 39))):(marijuana; is; a useful medicine for some people)
many children know,List([13, 39))
many children marijuana
know is
that marijuana is a useful medicine for some people T:already
a useful medicine for some people