About: http://webisa.webdatacommons.org/313561735

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Two of these 'F's, one reversed and one non-reversed were used as references and remained visible to the participant at all times, including during the practice and test trials on the computer.
http://www.w3.org/ns/prov#wasQuotedFrom	down-syndrome.org