Background: Guinea-Bissau is a republic. In the past, the government had been highly centralized. Multi-party governance was not established until mid-1991. The president is the head of state and the prime minister is the head of government. Since 1974, no president has successfully served a full five-year term.
Question: Who is the head of government?
Answer:<extra_id_0>.
<extra_id_0> prime minister<extra_id_1>