Instructions: In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.
Input: Question: Between the first president and the first vice president of Colombia, who was older? Passage:The Office of the Presidency goes back to the Congress of Angostura. This quasi-constituent assembly was formed to lay the ground work for a self-ruled governing administration after independence. The Constituent Assembly was formed by regional leaders that represented areas under rebel control; these areas did not include parts of what is now Colombia, as those areas were still under Spanish control, but aimed to legislate on its behalf. Congress elected an interim-executive officer and vested this figure with the title of President. Chosen to be first President of Colombia, was General Simón Bolívar y Palacios, leader of the revolutionary forces, who up to that point was titled "Supreme Chief" for his role in the revolution. The following day, Congress elected Francisco Antonio Zea Díaz, first Vice President of Colombia. Bolívar was subsequently re-elected interim President by the Angostura Assembly on after Colombia was conquered following the Battle of Boyacá, and elected again in 1821 in a permanent interim basis, pending national elections, by the Congress of Cúcuta, another constituent assembly mandated by the Angostura Assembly, and this time with elected officials representing the Colombian territories, during this time, and until 1826, the executive power was entrusted to the Vice President Francisco de Paula Santander y Omaña, while Bolívar was away in battle fighting to liberate Spanish colonies in Bolivia, and Peru. Bolívar was formally elected in a national election in 1826 for a period of four years, but on 27 August 1828, Bolívar declared martial law and assumed dictatorship style powers after the Congress of Ocaña failed to pass a new constitution. Bolívar eventually relinquished power in 1830, and Congress elected Joaquín de Mosquera y Arboleda as his successor, but was shortly deposed by General Rafael Urdaneta y Faría who hoped Bolívar would once again re-take power, but Bolívar not only declined the Presidency, but also shortly died, leaving Urdaneta with no mandate for power. Urdaneta ceded executive-power to the Vice President Domingo Caycedo y Sanz de Santamaría, as Congress had impeached Mosquera for his failure to prevent the coup; during this time, and until 1832 the Presidency remained vacant as there was no law for succession of power. In 1832, former Vice President Santander was elected by Congress as President of Gran Colombia, and it would be the last, since the territories of Venezuela and Ecuador broke away, which prompted the drafting of a new constitution.
 Links: a. Simón Bolívar b. Constituent assembly c. Congress of Angostura d. Battle of Boyacá
Output:
a