CREATE TABLE table_28901 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" TEXT, "Result" TEXT, "Candidates" TEXT)

when was the first elected when the candidates is thomas lawyer (dr) 54.9% william beekman (f) 45.1%?
SELECT "First elected" FROM table_28901 WHERE "Candidates" = 'Thomas Lawyer (DR) 54.9% William Beekman (F) 45.1%'
SELECT "First elected" FROM "table_28901" WHERE "Candidates" = 'Thomas Lawyer (DR) 54.9% William Beekman (F) 45.1%'