Complex sentence: Sheep ranching, leading source of the province's modest agricultural income (5% of output), still serves as an important source of wool, mutton and hides throughout the province and the wider Argentine market, whose taste for these products has been growing strongly.
Split into simpler sentences: Sheep ranching, is the leading source of the province's modest agricultural income (5% of output). It still serves as an important source of wool, mutton and hides throughout the province and the wider Argentine market, whose taste for these products has been growing strongly.