Complex sentence: Alexander Kielland's book Poison (novel) (1883) is a criticism of the Norwegian education system and the Latin School that the main characters attend is loosely based on the author's own experiences when he attented Stavanger Cathedral School.
Split into simpler sentences: Alexander Kielland's book Poison (novel) (1883) is a criticism of the Norwegian education system. The Latin School that the main characters attend is loosely based on the author's own experiences when he attented Stavanger Cathedral School.