Premise: Upper Grosvenor Street is a historic street in Mayfair, London, United Kingdom. It runs from the Grosvenor House Hotel off Park Lane to the Embassy of the United States off Grosvenor Square. The Embassy of Monaco is located at number 7. Odey Asset Management, a hedge fund run by Crispin Odey, is located at number 12.
Hypothesis: Upper Grosvenor Street has a Y.