Assertion: viagra's sildenafil | /r/CapableOf | cause by psychological factors
Facets:
value: by physiological factors
type: OTHER
Source sentences:
text: Sildenafil is the active ingredient of this drug, which successfully fights sexual impotence, caused both by psychological factors (distressful environment, intrapersonal difficulty, stress), as well as by physiological factors (fatigue, urological inflammatory processes, chronic diseases).