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.
The number of symbols in the roman numeral system will increase next year. 
( z1 increase :ARG1 ( z2 number :quant-of ( z3 thing :ARG1-of ( z4 symbolize ) :part-of ( z5 system :mod ( z6 numerational :mod ( z7 country :name ( z8 name :op "Rome" ) ) ) ) ) ) :time ( z9 year :mod ( z10 next ) ) )