Problem: North Carolina:

On October 25, 1836, construction began on the Wilmington and Raleigh Railroad to connect the port city of Wilmington with the state capital of Raleigh. In 1849 the North Carolina Railroad was created by act of the legislature to extend that railroad west to Greensboro, High Point, and Charlotte. During the Civil War, the Wilmington-to-Raleigh stretch of the railroad would be vital to the Confederate war effort; supplies shipped into Wilmington would be moved by rail through Raleigh to the Confederate capital of Richmond, Virginia.

What stretch of the railroad was vital to the confederates in the civil war?
---
A: Wilmington-to-Raleigh stretch

Problem: Capital punishment in the United States:

Electrocution was the preferred method of execution during the 20th century. Electric chairs have commonly been nicknamed Old Sparky; however, Alabama's electric chair became known as the "Yellow Mama" due to its unique color. Some, particularly in Florida, were noted for malfunctions, which caused discussion of their cruelty and resulted in a shift to lethal injection as the preferred method of execution. Although lethal injection dominates as a method of execution, some states allow prisoners on death row to choose the method used to execute them.

What state notably had electric chair malfunctions?
---
A: Florida

Problem: Miami:

The wet season begins some time in May, ending in mid-October. During this period, temperatures are in the mid 80s to low 90s (2935 C), accompanied by high humidity, though the heat is often relieved by afternoon thunderstorms or a sea breeze that develops off the Atlantic Ocean, which then allow lower temperatures, but conditions still remain very muggy. Much of the year's 55.9 inches (1,420 mm) of rainfall occurs during this period. Dewpoints in the warm months range from 71.9 F (22.2 C) in June to 73.7 F (23.2 C) in August.

How many centimeters of rain fall on Miami annually?
---
A: unanswerable

Problem: Symbiosis:

Synnecrosis is a rare type of symbiosis in which the interaction between species is detrimental to both organisms involved. It is a short-lived condition, as the interaction eventually causes death. Because of this, evolution selects against synnecrosis and it is uncommon in nature. An example of this is the relationship between some species of bees and victims of the bee sting. Species of bees who die after stinging their prey inflict pain on themselves (albeit to protect the hive) as well as on the victim. This term is rarely used.

What does the long enduring condition and the interaction eventually cause?
---
A:
unanswerable