@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_backhand_	skos:broader	isac:basic_stroke_ .
isac:_forehand_	skos:broader	isac:basic_stroke_ .
isac:front_crawl_	skos:broader	isac:basic_stroke_ .