PREFIX food: <http://www.w3.org/2001/sw/WebOnt/guide-src/food#>
PREFIX wine: <http://www.w3.org/2001/sw/WebOnt/guide-src/wine#>
SELECT ?Meal ?WineColor
WHERE {
   ?Meal food:hasDrink _:Wine .
   _:Wine wine:hasColor ?WineColor }