Complex sentence: The history of Vålerenga goes back to "Fotballpartiet Spark" which was founded in 1898, which became "Idrettslaget Spring" on 29 July 1913.
Split into simpler sentences: The history of Vålerenga goes back to "Fotballpartiet Spark" which has existed since 1898. A successor to this football club, "Idrettslaget Spring", was founded on 29 July 1913.