Complex sentence: The Guatemalan futsal team was the host team of the FIFA Futsal World Cup in 2000 when it was held in Guatemala, it was the 4th Futsal World Cup held under FIFA.
Split into simpler sentences: The Guatemalan futsal team was the host team of the FIFA Futsal World Cup in 2000 when it was held in Guatemala. It was the 4th Futsal World Cup held under FIFA.