<http://webisa.webdatacommons.org/128019619>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<todayifoundout.com> .
<http://webisa.webdatacommons.org/128019619>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/505663302>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/128019619> .
<http://webisa.webdatacommons.org/128019619>	<http://www.w3.org/ns/prov#value>	"Tryptophan is an amino acid which the human body doesn???t naturally produce, but is essential to proper body function and, thus, must be acquired from food." .