How to use roman numerals<br>Understand the concept of roman numerals. Roman numerals use fewer symbols than the number system you are used to. I is the number 1 (one), v is 5 (five), and x is 10 (ten), for example.
Roman numerals will continue to be used in the future 
( z1 continue :ARG1 ( z2 use :ARG1 ( z3 numeral :mod ( z4 country :name ( z5 name :op "Roman" :op "Empire" ) ) ) :time ( z6 future ) ) )