CREATE TABLE table_name_19 (name VARCHAR(255), college VARCHAR(255), pick VARCHAR(255), overall VARCHAR(255), round VARCHAR(255))
Which player was drafted overall from the college of Nebraska in a round under 6, pick of 15, and overall under 224?
    
SQL: SELECT name FROM table_name_19 WHERE overall < 224 AND round < 6 AND pick = 15 AND college = "nebraska"