The planet probably got this name due to its red color; Mars is sometimes referred to as 'the Red Planet'.
mars is named after a greek figure
while the passage describes the red planet nickname it does not specify where the name mars actually came from
( z1 name :ARG1 ( z2 planet :name ( z3 name :op "Mars" ) ) :ARG2 ( z4 figure :mod ( z5 country :name ( z6 name :op "Greece" ) ) ) )