@prefix skos: . @prefix isac: . isac:soil_erosion_ skos:broader isac:conservation_tillage_ . isac:_tillage_ skos:broader isac:conservation_tillage_ . isac:_compost_ skos:broader isac:conservation_tillage_ . isac:crop_residue_ skos:broader isac:conservation_tillage_ . isac:_strip_ skos:broader isac:conservation_tillage_ . isac:_no-till_ skos:broader isac:conservation_tillage_ . isac:strip_tillage_ skos:broader isac:conservation_tillage_ .