#half_mile__880_yards__880yard a unit of length equal to half of 1 mile
supertype: #linear_unit a unit of measurement of length
part of: #statute_mile__statutemile__mile__stat_mi__land_mile__mi a unit of length equal to 1760 yards
part of: #league.linear_unit an obsolete unit of distance of variable length (usually 3 miles)
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