Complex sentence: In response to the incident, SeaWorld increased the number of trainers who must be available during performances and in water training to five staff members, but this was ineffective because a fortnight later trainer Kenneth Peters was involved in a similar incident with a different orca.
Split into simpler sentences: In response to the incident, SeaWorld increased the number of trainers who must be available during performances and in-water-training to five staff members. This was ineffective because, a fortnight later, trainer Kenneth Peters was involved in a similar incident with a different orca.