Assertion: km | /r/HasProperty | metric unit
Facets:
Source sentences:
text: kilometre (km) or kilometer is a metric unit used to measure the length of a journey outside the USA;
text: Kilometers are the main unit of length in the International System of Units, or the metric system.
text: Kilometers are part of the metric system, which was first developed in France in 1795 and is now the official system of measurement used in most of the world.
text: A kilometer is a metric unit of measurement that is used to measure distance.
text: Kilometer (kilometre) is a metric system length unit.