sentences: meters m are a metric / si unit used for measuring length
docs: mil is unit_of_angular_measurement. meter is metric_linear_unit. ohm is unit_of_measurement. mass_unit is unit_of_measurement. metric_weight_unit is mass_unit. measuring_unit is unit_of_measurement. meter is measuring_instrument. ammeter is meter. common_measure is meter. metric_unit is unit_of_measurement.