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

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%'