How to use obscure types like ExerciseGym? - schema.org

Question

I've found this type on Schema.org: ExerciseGym
It doesn't have any examples with it and I'm confused as to how to use it because it seems to inherit properties from other schemas. This one is more specific to the business so ideally I'd like to use it.
It says "properties from LocalBusiness". I have used LocalBusiness before, and it contains good examples. Should I combine LocalBusiness and ExerciseGym and Person as I would like to list the personal trainers of the gym as employee but it says employee is Person?
So is something like this the right way to do this:
<div class="contact" itemscope itemtype="http://schema.org/ExerciseGym https://schema.org/LocalBusiness https://schema.org/Person" itemprop="employee">
<div class"name" itemprop="name">John Doe Does</div>
...
</div>

Answer 1

A type "includes" all its parent types. An ExerciseGym is also a SportsActivityLocation, a LocalBusiness, an Organization, a Place, and a Thing.
So you don’t have to specify ExerciseGym and LocalBusiness, specifying ExerciseGym is sufficient.
If you specify Person in addition to ExerciseGym, you are conveying: There is something that is a person and a gym. This is of course not want you want to say. To add an employee, you need two separate items: the gym and the person. In Microdata, an item is created with the itemscope attribute.
Example with an ExerciseGym that has two employees:
<div itemscope itemtype="http://schema.org/ExerciseGym">
<div itemprop="employee" itemscope itemtype="http://schema.org/Person">
<span itemprop="name">John</span>
</div>
<div itemprop="employee" itemscope itemtype="http://schema.org/Person">
<span itemprop="name">Alice</span>
</div>
</div>