QUES: He graduated in 1884 and was appointed to the compass unit of the Main Hydrographic Administration

correct the punctuation.

CORRECTED: He graduated in 1884 and was appointed to the compass unit of the Main Hydrographic Administration.
Question: According to the head authors a group of researchers undertook an extensive survey taking a large step forward in spreading light into the darkness
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Answer: According to the head authors, a group of researchers undertook an extensive survey, taking "a large step forward" in spreading light into the darkness.
The market for low impact paper and printing services has developed mainly through demand from public sector purchasers

Can you repeat this sentence, but add in punctuation?
The market for low impact paper and printing services has developed mainly through demand from public sector purchasers.
input: Every computer has sound files
fixed: Every computer has sound files.
input ---- Product description and specifications are based on information sites of manufacturers Supplied specifications and appearance mower OleoMac BC 430 T are subject to change without notice
output ---- Product description and specifications are based on information sites of manufacturers. Supplied specifications and appearance mower Oleo-Mac BC 430 T are subject to change without notice.
Add punctuation: Markets and Bazaars
A:
Markets and Bazaars "