Assertion: caffeine | /r/PartOf | a group of drugs
Facets:
Source sentences:
text: Previous studies have shown that caffeine, which belongs to a group of drugs known as methylxanthines, reduces apnea of prematurity, a condition in which the baby stops breathing for many seconds," said lead study author Lex W. Doyle, MD, professor of neonatal pediatrics at the Royal Women's Hospital in Melbourne and head of the Australian National Health and Medical Research Council's Centre of Research Excellence in Newborn Medicine.