TASK DEFINITION: In this task, you are given a question and an answer. Answer "Yes" if the given answer correctly answers the question, otherwise answer "No".
PROBLEM: how many presidents of the us, Answer: History records four presidents John Q Adams, Rutherford B. Hayes, Benjamin Harrison and George W. Bush who lost the popular vote but assumed office.

SOLUTION: No

PROBLEM: what does the president of the usa do, Answer: The president leads the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces .

SOLUTION: Yes

PROBLEM: what continent is australia, Answer: The continent is sometimes known in technical contexts by the names Sahul, Australinea or Meganesia, to distinguish it from the Australian mainland.

SOLUTION:
No