Simplify the following text for a Grade 12 native English-speaking person.
Original: On February 2 , 2004 , synthesis of ununpentium was reported in Physical Review C by a team composed of Russian scientists at the Joint Institute for Nuclear Research in Dubna , and American scientists at the Lawrence Livermore National Laboratory .
Simplified: On February 2 2004 a report that ununpentium and ununtrium were made was written in a journal named Physical Review C. The report was written by a team of Russian scientists at Dubna University 's Joint Institute for Nuclear Research and American scientists at the Lawrence Livermore National Laboratory . ,