Complex sentence: On 12 July 2005, Nathan announced that he was seeking re-election at the Singaporean presidential election, 2005 and submitted an application to the PEC for a certificate of eligibility application; by 6 August 2005, three more people had also submitted forms.
Split into simpler sentences: On 12 July 2005, Nathan announced that he was seeking re-election as President. He submitted an eligibility application to the Presidential Elections Committee; by 6 August 2005, three more people had also submitted forms.