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.
There are fewer roman numbers than natural numbers
they use fewer symbols
( z1 have-quant :ARG1 ( z2 number :mod ( z3 roman ) ) :ARG3 ( z4 less ) :ARG4 ( z5 number :ARG1-of ( z6 natural ) ) )