CREATE TABLE table_203_376 (id NUMBER, "no." NUMBER, "name" CLOB, "term of office" CLOB, "president ( s )  served under" CLOB)

how long did lee p. brown serve for ?
SELECT "term of office" - "term of office" FROM table_203_376 WHERE "name" = 'lee p. brown'
SELECT "term of office" - "term of office" FROM "table_203_376" WHERE "name" = 'lee p. brown'