sentences:  The document (known as "Il Manifesto dei 101"- "The Manifesto of 101") was conceived and initially drafted by philosopher Lucio Colletti, historians Luciano Cafagna and Francesco Sirugo, all three Italian_Communist_Party (PCI) members.It was co-signed by 98 more intellectuals, among whom were historians Renzo De Felice and Alberto Caracciolo, and strongly endorsed by Antonio Giolitti, a leading personality and member of parliament.The "manifesto" was submitted to the Direction Bureau of the PCI with the intent of initiating an internal debate on the Budapest events.