Sentence 1: One day at the zoo, I walked over to the gorilla enclosure. 
 Sentence 3: He sat in the center of the viewing area, as if posing 
 Sentence 4:  He glared angrily at me the entire time I was there 
 Sentence 5:  I felt very guilty, like I shouldn't be there looking at him 
 Given Sentence 2: Some people called it graffiti, but Sky called it art.