CREATE TABLE table_55031 ("Year" FLOAT, "Award" TEXT, "Category" TEXT, "Nominee" TEXT, "Result" TEXT)

What award was Denis Lawson nominated for in the Best Actor in a Musical category?
SELECT "Award" FROM table_55031 WHERE "Category" = 'best actor in a musical' AND "Nominee" = 'denis lawson'
SELECT "Award" FROM "table_55031" WHERE "Category" = 'best actor in a musical' AND "Nominee" = 'denis lawson'