Question: Egmont Key State Park lies southwest of what park that is operated by Pinellas County on five offshore keys?

<P0-S0> Egmont Key State Park is a Florida State Park located on Egmont Key, at the mouth of Tampa Bay, in the state of Florida, United States. <P0-S1>  It lies southwest of Fort De Soto Park and can only be reached by boat or ferry. <P0-S2>  The Egmont Key Lighthouse and the ruins of Fort Dade, a Spanish–American War era fort, are located in the park. <P0-S3>  Egmont Key is in Hillsborough County in a narrow strip of the county that extends along the Tampa Port Shipping Channel. <SEP> <P1-S0> Sawgrass Lake Park is a 333 acre park located in Pinellas County, Florida. <P1-S1>  The park offers a road for biking and in-line skating, as well as birdwatching, hiking, and picnicking. <P1-S2>  Located at 7400 25th St. North in St. Petersburg, Florida, it is one of the largest maple swamps on the Gulf Coast and includes an elevated mile-long boardwalk and half-mile dirt trail that "provide opportunities to see birds, butterflies, plants and animals in their natural settings within the most densely populated county in Florida." <P1-S3>  The property is managed by the Pinellas County Parks & Recreation Department, the Pinellas County School District <SEP> <P2-S0> The Florida Reef (also known as the Great Florida Reef, Florida reefs, Florida Reef Tract and Florida Keys Reef Tract) is the only living coral barrier reef in the continental United States. <P2-S1>  It is the third largest coral barrier reef system in the world (after the Great Barrier Reef and Belize Barrier Reef). <P2-S2>  It lies a few miles seaward of the Florida Keys, is about 4 miles (6 to 7 km) wide and extends (along the 20 meter depth contour) 270 km from Fowey Rocks just east of Soldier Key to just south of the Marquesas Keys. <P2-S3>  The barrier reef tract forms a great arc, concentric with the Florida Keys, with the northern end, in Biscayne National Park, oriented north-south and the western end, south of the Marquesas Keys, oriented east-west. <P2-S4>  The rest of the reef outside Biscayne National Park lies within John Pennekamp Coral Reef State Park and the Florida Keys National Marine Sanctuary. <P2-S5>  Isolated coral patch reefs occur northward from Biscayne National Park as far as Stuart, in Martin County. <P2-S6>  Coral reefs are also found in Dry Tortugas National Park west of the Marquesas Keys. <P2-S7>  There are more than 6,000 individual reefs in the system. <P2-S8>  The reefs are 5,000 to 7,000 years old, having developed since sea levels rose following the Wisconsinan glaciation. <SEP> <P3-S0> South-southwest of St. Petersburg, Florida, Fort De Soto Park is a park operated by Pinellas County on five offshore keys, or islands: Madelaine Key, St. Jean Key, St. Christopher Key, Bonne Fortune Key and the main island, Mullet Key. <P3-S1>  The keys are connected by either bridge or causeway. <P3-S2>  The island group is accessible by toll road from the mainland. <P3-S3>  Historically, the islands were used for military fortifications; remnants and a museum exhibit this history. <P3-S4>  Two piers, beaches, picnic area, hiking trails, bicycling trails, kayak trail, and a ferry to Egmont Key State Park are available.