Please capitalize where necessary: then hezekiah said to isaiah, good is the word of the lord which you have said.
A: Then Hezekiah said to Isaiah, Good is the word of the Lord which you have said.

Q: this explains the number of planets perfectly: there are only five convex regular solids (as is proved in euclid 's elements , book 13).

A: This explains the number of planets perfectly: there are only five convex regular solids (as is proved in Euclid 's Elements , Book 13).

Q: these three authors have in the opinion of historians of ideas and of philosophy the lowest possible reputation and are mentioned at best marginally.
A: These three authors have in the opinion of historians of ideas and of philosophy the lowest possible reputation and are mentioned at best marginally.

Problem: to begin your free file analysis, simply drag-and-drop your updateinfo file inside the dotted lines below, or click "browse my computer" and select your file.
Can you repeat this sentence, but capitalize it?
Answer: To begin your free file analysis, simply drag-and-drop your UPDATEINFO file inside the dotted lines below, or click "Browse My Computer" and select your file.

Text: to complicate matters even further, it required digging away snow from underneath the sleds to free the skids which were frozen to the base.

Correct capitalization: To complicate matters even further, it required digging away snow from underneath the sleds to free the skids which were frozen to the base.

Problem: vintage carbon use arrow keys to maneuver a car.
Can you repeat this sentence, but capitalize it?
Answer:
Vintage Carbon Use arrow keys to maneuver a car.