Sentence:There was a pair of odd looking 12" three ways I built for a friend, the [e1]woofers[/e1] were in a [e2]box[/e2] screwed to the back of 4 foot high raindrop-shaped panels which housed the midranges and tweeters.
 e1: woofers. 
 e2 : box.
Answer: Content-Container(e1,e2)