Seven friends P, Q, R, S, T, U, and V sit on a bench facing north. Each of them is of a different weight (in kg), their random bodily weights are 79, 83, 85, 87, 89, 92, and 96. The following information is known about them:
- P sits third to the right of the heaviest person.
- The heaviest person sits exactly between R and the lightest person, who sits at an end.
- The third lightest person sits adjacent to R and that person is neither P nor adjacent to P.
- Q sits third to the left of the person whose weight is the next higher to R.
- R’s weight is neither 83 kg nor 87 kg.
- P’s weight is neither 92 kg nor 79 kg.
- T’s weight is 83 kg.
- S is heavier than V but is not the heaviest.
Who is the third lightest?