Complex sentence: Meanwhile a park ranger (Benjamin Bratt), who knows Gail is white water canoeing down the river, bumps into the group; but Wade holds the gun to Gail's back and pretends that everything is OK.
Split into simpler sentences: Meanwhile a park ranger (Benjamin Bratt), who knows Gail, is white water canoeing down the river. He bumps into the group; but Wade holds the gun to Gail's back and pretends that everything is OK.