In which direction is point E, with reference to point S?
I. Point D is to the East of point E and point E is to the South of point F.
II. Point F is to the North-West of point S. Point D is to the North of point S.
If the data in both statements I and II together are necessary to answer the question.
From Statements I and II,
Clearly, E is to the North-West of S.
So, both statements are required to answer the question.