<http://schema.org/keywords>
"lighthouse,Pedra Branca,Governor William J,Singapore,Horsburgh Lighthouse,lighthouse foundation stone,Captain James Horsburgh,Pedra Branca island,singapore straits,difficult monsoon conditions,eastern seas,eastern entrance,solid solitary rock,John Turnbull Thomson,Horsburgh Lighthouse Foundation,Horsburgh Lighthouse Memorial,East India Company,eminent navigator,Changi Point,north-east monsoon,copper dome lighthouse,Northern Lighthouse Board,British merchants,public meeting,accidents,Straits,Horsburgh Testimonial,candle power,solid lighthouse,hydrographer,north-east monsoon winds,huge boulder rocks,erected test pillars,British Straits Settlement,Sir William Jeffcott,Choa Ah Lam,territorial water limit,excellent navigational maps,time-line 20 nov,VHF Radio-telephone communications,Indian convict labourers,white zebra stripes,upper light-room section,new flashing light,Resident Councillor Thomas,official project launch,candle power light,Light Apparatus Construction,Masonic ceremonial honours,Construction Team Architect"^^<http://www.w3.org/2001/XMLSchema#string>
<http://eresources.nlb.gov.sg/infopedia/articles/SIP_107_2005-01-20.html>