CREATE TABLE table_62355 ("Event" TEXT, "Time" TEXT, "Nationality" TEXT, "Date" TEXT, "Meet" TEXT, "Location" TEXT)

What is the nationality of the event with a 1:51.51 time?
SELECT "Nationality" FROM table_62355 WHERE "Time" = '1:51.51'
SELECT "Nationality" FROM "table_62355" WHERE "Time" = '1:51.51'