The presence of the nearby Cascade Mountains means rainfall is very low but irrigation , channelling water from the Columbia river, makes viticulture possible in 
(The presence of the nearby Cascade Mountains; makes; viticulture possible; L:in) (The presence of the nearby Cascade Mountains; means; rainfall is very low but irrigation , channelling water from the Columbia river) Context(The presence of the nearby Cascade Mountains means,List([0, 50))):(rainfall; is; very low but irrigation)
The presence of the nearby Cascade Mountains means,List([0, 50))
The presence of the nearby Cascade Mountains The presence of the nearby Cascade Mountains rainfall
makes means is
viticulture possible L:in
rainfall is very low but irrigation , channelling water from the Columbia river
very low but irrigation