I planned the experiment to prove the hypothesis in 1989, and an interesting result was observed.
(an interesting result; was observed; ) (I; planned; the experiment to prove the hypothesis in 1989) Context(I planned,List([0, 9))):(I; planned to prove; the hypothesis; T:in 1989)
I planned,List([0, 9))
an interesting result I I
was observed planned planned to prove
the experiment to prove the hypothesis in 1989
the hypothesis T:in 1989