Complex sentence: The feud between Lesnar and Goldberg began at the Royal Rumble, WWE's previous pay-per-view event which featured both brands, where Lesnar interfered in the Royal Rumble match, a 30-man battle royal, attacking and eliminating Goldberg from the match.
Split into simpler sentences: The feud between Lesnar and Goldberg began at the Royal Rumble, WWE's previous pay-per-view event which featured both brands. Here, Lesnar interfered in the Royal Rumble match, a 30-man battle royal, attacking and eliminating Goldberg from the match.