assuming you are playing 2n showing two lowest, p did not take immediate advantage
of 2n to show hearts/clubs. The choice of 1h followed by 5c would show a much better
heart suit than clubs and greatly increase the odds of p being short in dia. If p wanted a
club lead all they had to do was pass the only way to get a dia lead here is to x.
lead a dia and if p cannot ruff have a chat with them about the wonders of lightner.