Complex sentence: During these six and a half years, the Salesians have trained more than 1500 youth for manpower that have mastered new knowledge and skills as well as developed attitudes suitable for the dynamic and changing workplace.
Split into simpler sentences: During these six and a half years, the Salesians have trained more than 1500 youth. These young people have mastered new knowledge and skills as well as developed attitudes suitable for the dynamic and changing workplace.