sentence: According to Russell and Norwing , robots are special machines that have intelligence to carry out activities on their own or by command ( as cited in Chijindu & Inyiama , 2012 ) .
modified: According to Russell and Norwing robots are especial machines that have intelligence to executed activities on their own or by command ( as cited in Chijindu & Inyiama , 2012 ) .
transformation: PUNCT, ADJ, VERB