context: 4 After the 1984 elections, the Likud Party and the Labor Party formed a coalition and promised to hold a prime minister's rotation in mid-term. Shimon Peres from the Labor Party served as prime minister for the first two years, while Yitzhak Shamir served as prime minister after the rotation. After the 1988 elections, the Likud Party gained enough seats to form a government without having to form a coalition with the Labor Party. Yitzhak Shamir again served as prime minister.
question: Who was the Prime Minister of Israel before Yitzhak Shamir?
answers.text: Shimon Peres