Assertion: calendar's day | /r/HasProperty | 30-19=11
Facets:
Source sentences:
text: A woman whose menstrual cycles ranged in length from 30 to 36 days would be estimated to be infertile for the first 11 days of her cycle (30-19=11), to be fertile on days 12–25, and to resume infertility on day 26 (36-10=26).