Complex sentence: The African Leadership Academy (ALA) is a residential, secondary institution located in the outskirts of Johannesburg, South Africa for 15-to 18-year-olds, from all 54 African nations and around the world.
Split into simpler sentences: The African Leadership Academy (ALA) is a residential, secondary institution located in the outskirts of Johannesburg, South Africa. It is dedicated to 15-to 18-year-olds from all around the world.