Assertion: diver | /r/CapableOf | swim in single file
Facets:
Source sentences:
text: Technical divers frequently extend this feature and use a 5-foot or 7-foot hose, which allows divers to swim in single file while sharing air, which may be necessary in restricted spaces inside wrecks or caves.
text: Some divers use a primary regulator on a 7-foot hose and a secondary on a necklace, this is useful when it may be necessary for the divers to swim in single file.