claim: The Group of 15 includes Argentina.
evidence: This is a list of the 24 observers to the European Parliament for Hungary in the 1999 to 2004 session .. European Parliament. European Parliament. Hungary. Hungary. 1999 to 2004 session. 5th European Parliament. They were appointed by the Hungarian Parliament as observers from 1 May 2003 until the accession of Hungary to the EU on 1 May 2004 .. Hungary. Hungary. Hungarian Parliament. Parliament of Hungary. accession of Hungary to the EU. Accession of Hungary to the European Union