Complex sentence: Founded in 1884, it is Norway's second oldest political party; the first leader of the party was Emil Stang, and the current leader (since 2004) is Erna Solberg.
Split into simpler sentences: Founded in 1884, it is Norway's second oldest party. The first chairman of the party was Emil Stang, and the current leader (since 2004) is Erna Solberg.