Complex sentence: A profile is a set of different subjects that will make up for the largest part of the pupil's timetable in the fourth and fifth year, that are together called the Tweede Fase (literally, "second phase").
Split into simpler sentences: A profile is a set of different subjects that will make up for the largest part of the pupil's timetable in the fourth and fifth year. It is called the Tweede Fase (literally, "second phase").