About: http://webisa.webdatacommons.org/221129125

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	Have the push button hidden behind some molding.There are many other schemes.A google on hidden doors or secrete doors will get all kinds of ideas.
http://www.w3.org/ns/prov#wasQuotedFrom	bobvila.com