Complex sentence: The report found that police could have prevented the bombing, could have arrived on Utøya sooner and caught Anders Breivik faster, and that he could have been stopped from carrying out the Utøya massacre.
Split into simpler sentences: The report found that police could have prevented the bombing, could have arrived on Utøya sooner and caught Anders Breivik faster. It also concluded that Anders Breivik could have been stopped from carrying out the Utøya massacre.