cardiac catheterization: cardiac catheterization is the gold standard in evaluating aortic stenosis.

How would the previous sentence be correctly capitalized?
Answer: Cardiac catheterization: Cardiac catheterization is the gold standard in evaluating aortic stenosis.
the military academy ended his contract to teach there in 1901 and although many of his colleagues at the university would have also liked to stop his teaching there, nothing was possible under the way that the university was set up.

How would the previous sentence be correctly capitalized?
Answer: The Military Academy ended his contract to teach there in 1901 and although many of his colleagues at the university would have also liked to stop his teaching there, nothing was possible under the way that the university was set up.
description: brown pelican on rooftop in puerto lopez. in breeding plumage.

How would the previous sentence be correctly capitalized?
Answer: Description: Brown pelican on rooftop in Puerto Lopez. In breeding plumage.
i can however say two things in my defence; first, the proof i shall give is probably not a new one; second, if my proof is new it has a certain advantage over other proofs in using only the most elementary arguments.

How would the previous sentence be correctly capitalized?
Answer: I can however say two things in my defence; first, the proof I shall give is probably not a new one; second, if my proof is new it has a certain advantage over other proofs in using only the most elementary arguments.