If a large flat-screen tv is flanked by vertical white bookshelves in one of the rooms.
return tv ;return #1 that is flat-screen ;return #2 that is large ;return bookshelves ;return #4 that are white ;return #5 that are vertical ;return rooms ;return #3 that is flanked by #6 ;return #8 that is in  #7 ;return number of  #9 for each  #7 ;return #7 where  #10 is at least one ;return number of  #11 ;return if  #12 is equal to  one
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