Here's why:
* It's likely a surname. Surnames have varied pronunciations based on region, family tradition, and individual preference.
* The spelling doesn't offer clues. Without knowing the origin or context, it's hard to deduce the pronunciation.
To figure out the correct pronunciation, you'll need more information:
* Where does the name come from? Is it German, Dutch, French, or another language?
* Is there anyone with this name you can ask? This is the most reliable way to know.
* Do you have any other context about the name? For example, if it's a company name, their website might have an audio pronunciation guide.
Without more information, it's impossible to say how to pronounce "Semrau" definitively.