instruction:
In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.
question:
The political position of Prime Minister of Brazil existed in two different parliamentary periods in the country's history: from 1847 to 1889 (during most of the Empire) and from 1961 to 1963 (during the last years of the Second Republic).
answer:
who is the current prime minister of brazil


question:
'The New Colossus' is a sonnet that American poet Emma Lazarus (1849 -- 1887) wrote in 1883 to raise money for the construction of a pedestal for the Statue of Liberty. In 1903, the poem was cast onto a bronze plaque and mounted inside the pedestal's lower level.
answer:
what is the poem on the statue of liberty


question:
In solid-state physics, the valence band and conduction band are the bands closest to the Fermi level and thus determine the electrical conductivity of the solid. In non-metals, the valence band is the highest range of electron energies in which electrons are normally present at absolute zero temperature, while the conduction band is the lowest range of vacant electronic states. On a graph of the electronic band structure of a material, the valence band is located below the Fermi level, while the conduction band is located above it. This distinction is meaningless in metals where conduction occurs in one or more partially filled bands, taking on the properties of both the valence and conduction bands.
answer:

what is the difference between conduction band and valence band