Table schema:
CREATE TABLE table_name_40 (ning INTEGER, plaxo VARCHAR, bebo VARCHAR, orkut VARCHAR)

Question: What is the highest Ning that has a bebo less than 4, an orkut less than 100, with a plaxo greater than 0?
SQL: SELECT MAX(ning) FROM table_name_40 WHERE bebo < 4 AND orkut < 100 AND plaxo > 0