Complex sentence: Merchants from Ilocos, Pangasinan, Cagayan, and other nearby provinces, come to Bulanao and Dagupan to purchase rice, which is the major agricultural product of Kalinga, and sell other commodities, especially seafood, clothing, fabric, metal and plastic manufactures.
Split into simpler sentences: Merchants from Ilocos, Pangasinan, Cagayan, and other nearby provinces, come to Bulanao and Dagupan to purchase rice, which is the major agricultural product of Kalinga. These merchants sell other commodities, especially seafood, clothing, fabric, metal and plastic manufactures.