urn : ISBN : 0 7 5 2 8 2 0 9 0 7 ">< cite ▁▁▁▁▁▁ ▁property =" dc : title "> We aving ▁the ▁Web </ cite > ▁by ▁▁▁▁▁▁ ▁< span ▁property =" dc : cre ator "> Tim ▁Bern ers - Le e </ span ></ span ></ span >. ▁▁▁▁ ▁</ p > ▁▁ ▁</ body > ▁</ html > ▁Note ▁how ▁the ▁prefix ▁fo af ▁is ▁still ▁used ▁without ▁declaration . ▁R DF a ▁ 1 . 1 ▁automatically ▁includes ▁prefix es ▁for ▁popular ▁voc ab ular ies ▁such ▁as ▁FO AF . ▁ ▁The ▁minimal ▁ ▁document ▁is : ▁< html ▁lang =" en "> ▁▁ ▁< head > ▁▁▁▁ ▁< title > Example ▁Document </ title > ▁▁ ▁</ head > ▁▁ ▁< body ▁voc ab =" http :// schema . org / "> ▁▁▁▁ ▁< p ▁typeof =" B log "> ▁▁▁▁▁▁ ▁Welcome ▁to ▁my ▁< a ▁property =" url " ▁href =" http :// example . org / "> blog </ a >. ▁▁▁▁ ▁</ p > ▁▁ ▁</ body > ▁</ html > ▁That ▁is , ▁it ▁is ▁recommended ▁that ▁all ▁of ▁these ▁attributes ▁are ▁used : ▁voc ab , ▁typeof , ▁property ; ▁not ▁only ▁one ▁of ▁them . ▁ ▁See ▁also ▁ ▁Micro form ats , ▁a ▁simplified ▁approach ▁to ▁sem ant ically ▁annot ate ▁data ▁in ▁web ▁pages ▁ ▁Open ▁Graph ▁protocol , ▁a ▁way ▁to ▁use ▁R DF a ▁to ▁integrate ▁web ▁pages ▁into ▁the ▁Facebook ▁social ▁graph