Complex sentence: Yakult U.S.A Inc. is headquartered in Fountain Valley, California where its factory manufactures Yakult, a probiotic dairy drink made by fermenting a mixture of skimmed milk with a proprietary strain of bacterium named Lactobacillus casei Shirota.
Split into simpler sentences: Yakult U.S.A Inc. is headquartered in Fountain Valley, California where its factory manufactures its product. Yakult is a probiotic dairy drink made by fermenting a mixture of skimmed milk with a proprietary strain of bacterium named Lactobacillus casei Shirota.