▁in ▁attributes , ▁consisting ▁of ▁a ▁few ▁attributes ▁that ▁may ▁be ▁used ▁to ▁express ▁machine - read able ▁data ▁in ▁Web ▁documents ▁like ▁HTML , ▁SV G , ▁and ▁XML . ▁While ▁it ▁is ▁not ▁a ▁complete ▁solution ▁for ▁advanced ▁data ▁markup ▁tasks , ▁it ▁does ▁work ▁for ▁most ▁day - to - day ▁needs ▁and ▁can ▁be ▁learned ▁by ▁most ▁Web ▁authors ▁in ▁a ▁day ". ▁ ▁In ▁ 2 0 0 9 ▁the ▁W 3 C ▁was ▁position ed ▁to ▁retain ▁R DF a ▁L ite ▁as ▁unique ▁and ▁definit ive ▁standard ▁alternative ▁to ▁Micro data . ▁The ▁position ▁was ▁confirmed ▁with ▁the ▁publication ▁of ▁the ▁HTML 5 ▁Re comm end ation ▁in ▁ 2 0 1 4 . ▁ ▁Ess ence ▁The ▁ess ence ▁of ▁R DF a ▁is ▁to ▁provide ▁a ▁set ▁of ▁attributes ▁that ▁can ▁be ▁used ▁to ▁carry ▁metadata ▁in ▁an ▁XML ▁language ▁( h ence ▁the ▁' a ' ▁in ▁R DF a ). ▁ ▁These ▁attributes ▁are : ▁ ▁about ▁– ▁a ▁URI ▁or ▁C URI E ▁specifying ▁the ▁resource ▁the ▁metadata ▁is ▁about ▁ ▁rel ▁and ▁rev ▁– ▁specifying ▁a ▁relationship ▁and ▁reverse - rel ations hip ▁with ▁another ▁resource , ▁respectively ▁ ▁src , ▁href ▁and ▁resource ▁– ▁specifying ▁the ▁partner ▁resource ▁ ▁property ▁– ▁specifying ▁a ▁property ▁for ▁the ▁content ▁of ▁an ▁element ▁or ▁the ▁partner ▁resource ▁ ▁content ▁– ▁optional ▁attribute ▁that ▁over rides ▁the ▁content ▁of ▁the ▁element ▁when ▁using ▁the ▁property ▁attribute ▁ ▁dat atype ▁– ▁optional ▁attribute ▁that