# QUESTION
After three years of the home-hosting model, the Pac-12 announced a three-year deal to host the game at the neutral site of Levi's Stadium in Santa Clara, California. In 2017, the Pac-12 announced it would keep the game at Levi's Stadium through 2019 with an option for 2020.

Based on this passage, where is the pac 12 football championship played?
# ANSWER
The relevant information to answer the above question is: In 2017, the Pac-12 announced it would keep the game at Levi's Stadium through 2019 with an option for 2020.
FINAL ANSWER: Levi 's Stadium

# QUESTION
Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2 (n) electrons. Since electrons are electrically attracted to the nucleus, an atom's electrons will generally occupy outer shells only if the more inner shells have already been completely filled by other electrons. However, this is not a strict requirement: atoms may have two or even three incomplete outer shells. (See Madelung rule for more details.) For an explanation of why electrons exist in these shells see electron configuration.

Answer this question: what is the maximum number of electrons in the first energy shell of an atom?
# ANSWER
The important part for answering this question is: Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on.
FINAL ANSWER: two

# QUESTION
Passage: Formerly, the vice president would preside regularly over Senate proceedings, but in modern times, the vice president rarely presides over day-to-day matters in the Senate; in their place, the Senate chooses a President pro tempore (or "president for a time") to preside in the vice president's absence; the Senate normally selects the longest-serving senator in the majority party. The President pro tempore has the power to appoint any other senator to preside, and in practice junior senators from the majority party are assigned the task of presiding over the Senate at most times.

Question: Based on this passage, who takes the vice president's place in senate?
# ANSWER
The important part for answering this question is: Formerly, the vice president would preside regularly over Senate proceedings, but in modern times, the vice president rarely presides over day-to-day matters in the Senate; in their place, the Senate chooses a President pro tempore (or "president for a time") to preside in the vice president's absence; the Senate normally selects the longest-serving senator in the majority party.
FINAL ANSWER: a President pro tempore ( or '' president for a time '' )