Complex sentence: Arsenal ran riot in the first half, with Alexis Sanchez, Theo Walcott & Mesut Ozil all scoring, with the half time score of 3-0 unchanged at the final whistle.
Split into simpler sentences: Arsenal ran riot in the first half, with Sánchez, Walcott and Mesut Özil all finding the back of the net. The half time score of 3-0 remained unchanged at the final whistle.