It's surprisingly difficult to do *well*. The problem is that it is very easy to identify the name Trump, but much more difficult to reliably identify a sentence. People don't always punctuate properly, and there may be no sentence-ending punctuation in a headline or caption. Other difficult cases are separating other uses of periods from those that end sentences. You basically need to parse the sentence and understand it.

It's theoretically possible, but would be part of a much more sophisticated piece of software.

Best,
Dave from Tools of Our Tools