13. The method of claim 12 , wherein the plurality of tokens each correspond to a word of the first sentence.
13. The method of claim 12 , wherein the plurality of tokens each correspond to a word of the first sentence. 15. The computing device of claim 13 , wherein the second numerical value is calculated using an equation having a form: 
 Q ( a,b,c,d,e,f , . . . )= P ( a ) P ( b ) P ( c ) P ( d ) P ( e ) P ( f ), wherein terms having the form P(a) correspond to a uni-gram probability.