Question: Sooneck Castle is located in he upper middle valley of a European river that ventually empties into what?
Sentence (from "Beaver Valley, Delaware and Pennsylvania"): It is approximately bounded by US Route 202 to the east, The Brandywine River to the west, Thompsons Bridge Road to the south, and Smithbridge Road to the north, with Beaver Valley Road encircling a large portion of the valley.
Relevant evidence: No