Given a list of facts such as;
- ("hr", "min", 60)
- ("min", "second", 60)
- ("second", "ms", 1000)
and a query such as ("hr", "ms", 5) we can convert between units.
query ("hr", "ms", 5) -> 3.6e+6 (approximately)
Given facts:
- ("hr", "min", 60)
- ("min", "second", 60)
- ("second", "ms", 1000)
we can convert ms to hr