for those who expect documentaries to be objective creatures and let me give you a little lesson in american film making. documentaries rely heavily on casting. you pick and choose characters you think will enhance the drama and entertainment value of your film. after you have shot a ton of footage and you splice it together to make a film with ups and downs and turning points and climaxes and etc. if you have trouble with existing footage and you either shoot some more that makes sense and find some stock footage and or be clever with your narration. the allegation that the filmmakers used footage of locales not part of the movie (favelas next to beautiful beaches) does not detract from the value of the film as a dramatic piece and the particular image is one that resonates enough to justify its not quite truthful inclusion. at any rate and you use the footage you can. so they do not happen to have police violence footage for that particular neighborhood. does this mean not include it and just talk about it or maybe put in some cartoon animation so the audience isn not duped. um and no. as for the hopeful ending and why not. yes and americans made it. yes and americans are optimistic bastards. but why end on a down note. just because it set in a foreign country and foreign films by and large end on a down note. let foreigners portray the dismal outlook of life. let us americans think there may be a happy ending looming in the future. there just may be one. 
for those who expect documentaries to be objective creatures and let me give you a little lesson in american film making. documentaries rely heavily on casting. you pick and choose characters you think will enhance the drama and entertainment value of your film. after you have shot a ton of footage and you splice it together to make a film with ups and downs and turning points and climaxes and etc. if you have trouble with existing footage and you either shoot some more that makes sense and find some stock footage and or be clever with your narration. the allegation that the filmmakers used footage of locales not part of the movie (favelas next to beautiful beaches) does not detract from the value of the film as a dramatic piece and the particular image is one that resonates enough to justify its not quite truthful inclusion. at any rate and you use the footage you can. so they do not happen to have police violence footage for that particular neighborhood. does this mean not include it and just talk about it or maybe put in some cartoon animation so the audience isn not duped. um and no. as for the hopeful ending and why not. yes and americans made it. yes and americans are optimistic bastards. but why end on a down note. just because it set in a foreign country and foreign films by and large end on a down note. let foreigners portray the dismal outlook of life. let us americans think there may be a happy ending looming in the future. there just may be one. ---------------------------------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."
