LSAT December 2006 questions 11-15：
a locally knows guitarist's demo CD contains exactly seven different songs-S,T,V,W,X,Y,and Z.Each song occupies exactly one of the CD's seven tracks. Some of the songs are rock classics;the others are new compositions. The following condition must hold:
S occupies the fourth track of the CD. Both Wand Y precede S on the CD,T precedes W on the CD. A rock classic occupies the sixth track of the CD. Each rock classic is immediately preceded on the CD by a new composition. Z is a rock classic.
i cannot understand this rule Both Wand Y precede S on the CD. T precedes W on the CD.
and then analysis says that this rule state that both W and Y precede S on the CD. By itself, this means that W and Y cannot be tracks 5, 6,or7 on the CD(because the first rule establishes that S is 4th.)
what does Both Wand mean? what can i do when some word like this i cannot understand appear during the test?