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

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


Question: What can or no make that where can a tribute to the fall of Katyn be found?

Answer: Where can a tribute to the fall of Katyn be found?


Question: What was er when was Zia-ul-Haq born?

Answer:
When was Zia-ul-Haq born?