TASK DEFINITION: Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
PROBLEM: What all is balanced in an open system of particles no sorry what is internally missing from this system?

SOLUTION: In an open system of particles, there are no internal what?

PROBLEM: What social problems no what nationality aren't researchers Richard G. Wilkinson and Kate Pickett?

SOLUTION: What nationality aren't researchers Richard G. Wilkinson and Kate Pickett?

PROBLEM: What world's no Under which field did the world's first synthetically produced nuclear reaction occur?

SOLUTION:
Under which field did the world's first synthetically produced nuclear reaction occur?