Complex sentence: The IAEA was given access to Parchin on 1 November 2005, and took environmental samples: inspectors did not observe any unusual activities in the buildings visited, and the results of the analysis of environmental samples did not indicate the presence of nuclear material.
Split into simpler sentences: The IAEA was given access to Parchin on 1 November 2005, and took environmental samples. Inspectors did not observe any unusual activities in the buildings visited, and the results of the analysis of environmental samples did not indicate the presence of nuclear material.