Use this pattern instead of placeholder text
<label for="form-input"> Example form label </label> <input id="form-input" name="form-input" aria-describedby="form-help"> <p id="form-help">Some help text here</p>
Interfaces for exploring data rely on the data itself being well written.
Improving the way data is labelled and described, wihout affecting the underlying meaning, whilst also making sure it's still machine readable is a tricky task!
Here are some resources that can help (thanks everyone for the suggestions).