About: http://webisa.webdatacommons.org/137873815

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	The most common (and obvious) reason is to remove weather- and age-deteriorated mortar from the bed and head joints on buildings, monuments, chimneys and other brick or block structures.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com