question: Bldr of mcw&f, and a Year smaller than 1927, and a LT Nos of 9820-9821 has what type?
answer: SELECT type FROM table_name_19 WHERE bldr = "mcw&f" AND year < 1927 AND lt_nos = "9820-9821"
context: CREATE TABLE table_name_19 (type VARCHAR, lt_nos VARCHAR, bldr VARCHAR, year VARCHAR)