Pact of Liberal Democrats
It was conceived in 2003 by Mario Segni , Carlo Scognamiglio Pasini ( ex-PLI , ex-PL , ex-FI , ex-UDR , ex-UpR , ex-FdL and ex-DE ) and Michele Cossa ( leader of the Sardinian Reformers ) , as a centrist party alternative to the centre-left . 
<triplet> Carlo Scognamiglio Pasini <subj> PL <obj> member of political party <triplet> PL <subj> centrist <obj> political alignment <triplet> Sardinian Reformers <subj> centrist <obj> political alignment