i watched this one mostly to see charlie ruggles and una merkel and two of my favorites. the plot has many a twist and turn  it not bad as a straight mystery aboard a train. but why throw in a circus train wreck and an escaped gorilla. i can mention this without it being a spoiler because the circus train wreck and the gorilla have nothing to do with the intricate mystery plot. the bad person trying to kill the good people has many tricks up his sleeve and but the circus train wreck was purely coincidental. it allows for a single scene with a menacing gorilla and but then it back to the murder mystery. 
i watched this one mostly to see charlie ruggles and una merkel and two of my favorites. the plot has many a twist and turn  it not bad as a straight mystery aboard a train. but why throw in a circus train wreck and an escaped gorilla. i can mention this without it being a spoiler because the circus train wreck and the gorilla have nothing to do with the intricate mystery plot. the bad person trying to kill the good people has many tricks up his sleeve and but the circus train wreck was purely coincidental. it allows for a single scene with a menacing gorilla and but then it back to the murder mystery. ---------------------------------Answer Question Below----------------------------------

Judge the movie review above, you need to make a function call:
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        print "This is a semantically positive review."
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        print "This is a semantically negative review."
