Complex sentence: A year later, in 2007, the Queensland Government sold the SunRetail arm of Energex, and to ensure the high standard of service was maintained, Energex announced a record $1 million-per-year sponsorship over the next three years.
Split into simpler sentences: A year later, in 2007, the Queensland Government sold the SunRetail arm of Energex. To ensure the high standard of service was maintained, Energex announced a record $1 million-per-year sponsorship over the next three years.