{HEAD ~ The phosphor} 9, wherein {TAIL ~ the element} M is at least one kind of element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn, the element 
wherein
{ HEAD ~ The phosphor } 9 , wherein { TAIL ~ the element } M is at least one kind of element selected from the group consisting of Mg , Ca , Sr , Ba , and Zn , the element
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH