html5 microdata markup using Schema.org - html

Question

I am working on a site of a christian church. It has a page with schedule list and house churches list which I want to mark up using Schema.org microdata. The thing is I cannot find appropriate type to describe these items. For schedule I decided to go for http://Schema.org/Event type, however I need to add contact person name and phone but which property of Event can I use for that? I used "performer" property, but that is not really it...
<div itemscope="" itemtype="http://schema.org/Event">
<span class="time"><time itemprop="startDate" datetime="2012-07-02T19:00:00">19:00</time></span>
<h2 class="colored" itemprop="name">Worship Group</h2>
<strong>Address:</strong> <span itemprop="location">St. Patric 42</span>
<br><strong>Contacts:</strong>
<span itemprop="performer" itemscope="" itemtype="http://schema.org/Person">
<span itemprop="telephone">8-422-212-5532</span> (<span itemprop="name">John Parker</span>)</span>
<span itemprop="description">We want to worhip God together</span>
</div>
As for a house church - it's something between an Organization and Event - it's a group of believers getting together at a place at a certain time. I decided to go for http://schema.org/Organization, added ContactPoint as church leader contacts info. But how can I mark start time?
Is there any way to combine entity types so that I could describe all important properties I have?

Answer 1

First part of your question:
For schedule I decided to go for http://Schema.org/Event type, however
I need to add contact person name and phone but which property of
Event can I use for that?
You're spot on using an Event for your schedules. You could of course be a bit more precise and and use an extension of Event to be more precise as itemtype.
When you wish to specify a contact person as a performer I'm a bit unsure. I would rather flip your thinking around and not specify a contact person but instead specify the events as upcoming or past events associated with the organization. The organization then has a contact point that will go for all the events.
<div itemscope="" itemtype="http://schema.org/Organization/ReligiousGroup">
<div itemprop="location" itemscope="" itemtype="http://schema.org/Church">
...
</div>
<div itemprop="contactPoint" itemscope="" itemtype="http://schema.org/Person">
...
</div>
<div itemprop="events" itemscope="" itemtype="http://schema.org/Event">
...
</div>
<div itemprop="events" itemscope="" itemtype="http://schema.org/Event">
...
</div>
<div itemprop="events" itemscope="" itemtype="http://schema.org/Event">
...
</div>
</div>
Or more simple described with YAML:
---
Organization/ReligiousGroup:
location : Church
contactPoint : Person
events :
- Event
- Event
- Event
You can extend Organization to ReligiousGroup to be more precise of the item.
Read more about extending here: http://www.schema.org/docs/extension.html
Now the final part of your question:
As for a house church - it's something between an Organization and
Event - it's a group of believers getting together at a place at a
certain time.
A group of people getting together at a place at a certain time is an Event.