About: http://webisa.webdatacommons.org/336122766

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	Vitamin D deficiency was a seriously problem in the 19th and e. 20th century, especially in the industrial north, because of the lack of sunlight children and adults were receiving due to the obscene working weeks they had.
http://www.w3.org/ns/prov#wasQuotedFrom	veggieboards.com