Complex sentence: According to Ethnologue's database (cited in Svartvik and Leech, 2006), there are five languages are spoken by largest number of world's people which are English, Chinese, Spanish, Russian, and Hindi.
Split into simpler sentences: According to Ethnologue's database (cited in Svartvik and Leech, 2006), there are five languages that are spoken by the largest number of people. They are English, Chinese, Spanish, Russian, and Hindi.