Complex sentence: Venezuela began to deliver about 96,000 barrels of oil per day from its state-owned oil company, PDVSA, to Cuba at very favorable prices and Cuba in exchange sent 20,000 state-employed medical staff and thousands of teachers to Venezuela's poorest states.
Split into simpler sentences: Venezuela began to deliver about 96,000 barrels of oil per day from its state-owned oil company, PDVSA, to Cuba at very favorable prices. In exchange, Cuba sent 20,000 state-employed medical staff and thousands of teachers to Venezuela's poorest states.