What do doctors of homeopathy practice? What is Quartz believed to have in #1? What do doctors of internal medicine study? Are #1 or #2 not included in #3?
Quartz
Doctors of Homeopathy are practitioners of "alternative medicine"  In alternative medicine practices, Quartz is believed to have powers. Doctors of Internal Medicine have completed a medical residency and do not recommend alternative medicine.
mineral composed of silicon and oxygen atoms in a continuous framework of SiO₄ silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO₂
Are Doctors of Homeopathy more likely than Doctors of Internal Medicine to recommend Quartz as a treatment?