Task: Question Generation
Input (English): Context: Are low vitamin D levels linked with semen quality and sex steroids in infertile men?
Answer: Infertile men with vitamin D deficiency had lower sperm motility, total numbers of motile sperm, Inhibin B, sex-hormone-binding-globulin (SHBG) and testosterone/estradiol ratio, but higher levels of free sex steroids, than infertile men with normal vitamin D levels.
Output (English): Are vitamin D deficiency and low ionized calcium linked with semen quality and sex steroid levels in infertile men?