Complex sentence: The BGLE naming has been accepted because of long use, though a change in generic term, from reef to rock, was made on recommendation by the UK Antarctic Place-Names Committee in 1971.
Split into simpler sentences: The BGLE naming has been accepted because of long use. A change in generic term, from reef to rock, was made on recommendation by United Kingdom Antarctic Place-Names Committee (UK-APC) in 1971.