Nichols was found guilty May 26 of 161 counts of first-degree murder for 160 victims and an unborn child in a state trial.
Nichols was found guilty for the murder over 170 people. 
It states "murder for 160 victims and an unborn child" Therefore he was found guilty for less than 170 people.
( z1 find :ARG1 ( z2 guilty :ARG1 ( z3 person :name ( z4 name :op "Nichols" ) ) :ARG2 ( z5 murder :ARG0 z3 :ARG1 ( z6 person :quant 170 ) ) ) )