Context: Nigeria is a Federal Republic modelled after the United States, with executive power exercised by the president. It is influenced by the Westminster System model[citation needed] in the composition and management of the upper and lower houses of the bicameral legislature. The president presides as both Head of State and head of the national executive; the leader is elected by popular vote to a maximum of two 4-year terms. In the March 28, 2015 presidential election, General Muhammadu Buhari emerged victorious to become the Federal President of Nigeria, defeating then incumbent Goodluck Jonathan.

Question: What is Nigeria's form of government?
Answer: Federal Republic

Question: What houses does the Nigerian legislature have?
Answer: upper and lower

Question: How many times can a Nigerian president be elected?
Answer: two 4-year terms

Question: Who won the 2015 Nigerian presidential election?
Answer: General Muhammadu Buhari

Question: Who lost the 2015 Nigerian presidential election?
Answer: Goodluck Jonathan