Complex sentence: Ferguson returned to acting in 2006: she appeared as a lounge singer in the "Poseidon" remake and later had supporting roles in 2007's "Grindhouse" and the 2009 musical film "Nine".
Split into simpler sentences: Ferguson returned to acting in 2006, appearing as a lounge singer in the "Poseidon" remake. She later had supporting roles in 2007's "Grindhouse" and the 2009 musical film "Nine".