Complex sentence: He created a strip first titled "A-laget", about three soccer supporter, but the concept evolved into what became the strip "Pondus", one of Scandinavia's most successful comic strips of all time.
Split into simpler sentences: He created a strip called "A-laget", about three soccer supporters. This concept evolved into what became the strip "Pondus", one of Scandinavia's most successful comic strips of all time.