8th Parliament of Singapore
The "de facto" Leader of the Opposition was Chiam See Tong until he resigned as secretary-general of the Singapore Democratic Party on 17 May 1993 , and was replaced by Ling How Doong , chairman of his party . 
<triplet> Chiam See Tong <subj> Singapore Democratic Party <obj> position held <triplet> Ling How Doong <subj> Singapore Democratic Party <obj> member of political party