CREATE TABLE table_4290 ("Townland" TEXT, "Area (  acres  ) " FLOAT, "Barony" TEXT, "Civil parish" TEXT, "Poor law union" TEXT)

What is the poor law union for the Barnahely towland?
SELECT "Poor law union" FROM table_4290 WHERE "Townland" = 'Barnahely'
SELECT "Poor law union" FROM "table_4290" WHERE "Townland" = 'Barnahely'