Complex sentence: Dr Joseph Garcia (born 1967) is a Gibraltarian politician, and the current leader of the Gibraltar Liberal Party, part of the official opposition in the current government of Gibraltar, controlling two of the fifteen seats in the Gibraltar Parliament.
Split into simpler sentences: Dr Joseph Garcia (born 1967) is a Gibraltarian politician, and the current leader of the Gibraltar Liberal Party. This party is part of the official opposition in the current government of Gibraltar, controlling two of the fifteen seats in the Gibraltar Parliament.