CREATE TABLE table_76647 ("Target/Approach" CLOB, "Candidate Name" CLOB, "Trial Phase" CLOB, "Trial Start Date" CLOB, "Expected End Date" CLOB)

What is Trial Start Date, when Candidate Name is PBT2?
SELECT "Trial Start Date" FROM table_76647 WHERE "Candidate Name" = 'pbt2'
SELECT "Trial Start Date" FROM "table_76647" WHERE "Candidate Name" = 'pbt2'