A woman in a skirt and cowboy hat and a woman in pink pants with an exposed midriff are walking down the street looking at the shops .
Chances are about even that the first woman 's skirt is made of denim .
Chances are about even that the first woman 's skirt is made of denim .
It is highly unlikely that the first woman 's skirt is made of denim .
The first woman 's skirt is made of denim .