Assertion: tryptophan | /r/HasProperty | vital
Facets:
value: for the production process of serotonin
type: PURPOSE
Source sentences:
text: Tryptophan is one of the 8 essential amino acids, meaning it is vital but cannot be produced by the body.
text: Tryptophan is also vital for the production process of serotonin, which is a brain chemical involved in regulating mood.