source: [word=on] [tag="PRP$"] [tag=NN] [□=□] □
destination: [word=on] [tag="PRP$"] [tag=NN] [tag=□] □
spec: Prerequisites : SPAN 326 or equivalent , and graduate standing . Senator Exon , believing that God was on his side , ( 26 ) set forth to battle the pornographers by introducing the most important piece of legislation that the Senator ever believed that he had worked on .