Seven dignitaries F, G, H, I, N, O and P are to be seated together at an official ceremony. They will be seated in seven chairs arranged one behind the other, numbered sequentially from 1 to 7 from front to back. The seating must conform to the following rules.
 F must sit in the chair immediately Behind O’s chair.
 G cannot sit in the chair immediately in front of N’s chair and G cannot sit in the chair immediately behind N’s chair.
 There must be exactly two chairs between the chairs of H and P.
 There must be at least one chair between the chairs of I and P.
 N must sit in chair 3.

If F sits in chair 6 and H sits in chair 7, which of the following dignitaries, must sit in chair 2 ?