ATLANTA (CBS ATLANTA) - Private investigator TJ Ward said presidential hopeful Herman Cain was not lying at a news conference on Tuesday in Phoenix. Cain denied making any sexual actions towards Sharon Bialek and vowed to take a polygraph test if necessary to prove his innocence. Cain has not taken a polygraph but Ward said he does have software that does something better. Ward said the $15,000 software can detect lies in people's voices. CBS Atlanta's Mike Paluska played Cain's speech for Ward into the software and watched as it analyzed Cain's every word. If he is hiding something this...