Idea for the Q&A below: The relevant sentence in the passage is: Systematic errors are caused by imperfect calibration of measurement instruments or imperfect methods of observation, or interference of the environment with the measurement process, and always affect the results of an experiment in a predictable direction.
Q: Systematic error, however, is predictable and typically constant or proportional to the true value. If the cause of the systematic error can be identified, then it usually can be eliminated. Systematic errors are caused by imperfect calibration of measurement instruments or imperfect methods of observation, or interference of the environment with the measurement process, and always affect the results of an experiment in a predictable direction. Incorrect zeroing of an instrument leading to a zero error is an example of systematic error in instrumentation.

Based on this passage, errors that consistently cause measurement value to be too large or too small?
A: Systematic errors

Idea for the Q&A below: To answer the question, consider the following: Marina Bay Sands is an integrated resort fronting Marina Bay in Singapore.
Q: Context: Marina Bay Sands is an integrated resort fronting Marina Bay in Singapore. At its opening in 2010, it was billed as the world's most expensive standalone casino property at S $ 8 billion, including the land cost.

Question: where is marina bay sands located in singapore?
A: fronting Marina Bay in Singapore

Idea for the Q&A below: The relevant information to answer the above question is: "Saturday in the Park" is a song written by Robert Lamm and recorded by the group Chicago for their 1972 album Chicago V.
Q: "Saturday in the Park" is a song written by Robert Lamm and recorded by the group Chicago for their 1972 album Chicago V.

Based on this passage, who sings the song saturday in the park?
A: the group Chicago

Idea for the Q&A below: To answer this question, we should know that: The Federal Government of the United States (U.S. Federal Government) is the national government of the United States, a republic in North America, composed of 50 states, one district, Washington, D.C. (the nation's capital), and several territories.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Q: The Federal Government of the United States (U.S. Federal Government) is the national government of the United States, a republic in North America, composed of 50 states, one district, Washington, D.C. (the nation's capital), and several territories. The federal government is composed of three distinct branches: legislative, executive, and judicial, whose powers are vested by the U.S. Constitution in the Congress, the President, and the federal courts, respectively. The powers and duties of these branches are further defined by acts of Congress, including the creation of executive departments and courts inferior to the Supreme Court.

Based on this passage, what form of government does the united states use?
A: a republic