What is 'having sex'?

The Times of India reports on a Kinsey Institute opinion poll that has some interesting findings:

'95 per cent of respondents would consider penile-vaginal intercourse (PVI) having had sex, but this rate drops to 89 per cent if there is no ejaculation.

81 per cent considered penile-anal intercourse having had sex, with the rate dropping to 77 per cent for men in the youngest age group (18-29), 50 per cent for men in the oldest age group (65 and up) and 67 per cent for women in the oldest age group.

71 per cent and 73 per cent considered oral contact with a partner's genitals (OG), either performing or receiving, as having had sex.

Men in the youngest and oldest age groups were less likely to answer 'yes' compared with the middle two age groups for when they performed OG.

Significantly fewer men in the oldest age group answered 'yes' for PVI (77 per cent). The study has been published in the international health journal Sexual Health.'

Was Bill Clinton asked  for his opinion?