Complex sentence: A French study in late 2009 examined a small number of women with ultrasound as they had intercourse, by examining changes in the vagina they found physiological evidence of the G-Spot.
Split into simpler sentences: A French study in late 2009 examined a small number of women with ultrasound as they had intercourse. By examining changes in the vagina, they found physiological evidence of the G-Spot.