Assertion: viagra's sildenafil | /r/HasProperty | compound uk-92,480
Facets:
Source sentences:
text: Sildenafil (compound UK-92,480) was synthesized by a group of pharmaceutical chemists working at Pfizer's Sandwich, Kent, research facility in England.
text: Sildenafil (compound UK-92,480) was synthesized by a group of pharmaceutical chemists working at Pfizer's Sandwich, Kent, research facility in England.