Church Multisite – Share content from 3 sites to one master site

Hello, i have a short question. I build a website for a church with 3 locations in one city. Each location will have there own site and content. We choose to use WordPress multisite function. It works great! On each of the location sites, there will be published sermons, news and activities. Is it possible to collect all this content from this 3 sites and place it automaticly on one master site? I spend a few hours to research, but can’t find it… Hope that you can help me. Would be very glad! Thanks. Regards, Manuel