Read the text and determine if the sentence is true:

The Leader of the Opposition of Singapore is usually the leader of the second largest political party represented in the Parliament of Singapore. During the 1955 Legislative Assembly election, the late Lee Kuan Yew was the "de facto" Leader of the Opposition, as the People's Action Party was then the second largest political party represented in the Legislative Assembly.

Sentence: During Singapore's 1958 Legislative Assembly election, the People's Action Party was the second largest political party represented in the Legislative Assembly. 
It's impossible to say