at the end and it is clear that the murderers planted the murder weapon in mrs. columbo car and it was at the police ballistics lab. but where did the gun under the hood and used in the demonstration and come from. wouldn not the murderers have cleared out the stuff under the hood. they had a whole week. or did columbo cops replicate the camera or gun under the hood used in the demonstration. how did they do that without breaking and entering the car. perhaps this is why the murders seemed surprised at the end. but how could columbo have replicated their camera or gun device and gotten it calibrated to their key fob. columbo must have gotten the gun back from ballistics and had it re planted under the hood of the car and and been very lucky that the rest of the device with camera was still there and transmitting. this was a positive show until this glaring plot error at the end. 
at the end and it is clear that the murderers planted the murder weapon in mrs. columbo car and it was at the police ballistics lab. but where did the gun under the hood and used in the demonstration and come from. wouldn not the murderers have cleared out the stuff under the hood. they had a whole week. or did columbo cops replicate the camera or gun under the hood used in the demonstration. how did they do that without breaking and entering the car. perhaps this is why the murders seemed surprised at the end. but how could columbo have replicated their camera or gun device and gotten it calibrated to their key fob. columbo must have gotten the gun back from ballistics and had it re planted under the hood of the car and and been very lucky that the rest of the device with camera was still there and transmitting. this was a positive show until this glaring plot error at the end. ---------------------------------Answer Question Below----------------------------------

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