Study the following information carefully and answer the question given below: A certain number of persons sit in a row facing north. Two persons sit ...

Study the following information carefully and answer the question given below:

A certain number of persons sit in a row facing north. Two persons sit between N and Q, who is the only neighbour of B. W sits 5th to the left of L, who sits immediately to the right of N. W sits exactly in the middle of the row. The number of persons sitting between W and N is the same as the number of persons sitting between W and T. Z sits 2nd to the right of H. Three persons sit between T and H. O sits just to the left of A and just to the right of E, who does not sit adjacent to W.

What is the number of persons sitting between H and N?