Complex sentence: Starting at age fifteen, McKenzie spent six summers assisting at a summer camp for children and adults with mental and physical disabilities called Lions Camp Tatiyee, where he first met people who are Deaf or Hard of Hearing.
Split into simpler sentences: Starting at age fifteen, McKenzie spent six summers assisting at a summer camp for children and adults with mental and physical disabilities, called Lions Camp Tatiyee. This is where he first met people who are Deaf or Hard of Hearing.