Reception Ghost Picture

Francis J. sent us this picture of a see-through woman at a reception. Was it someone moving through that the camera caught in motion, a lengthened-exposure, or a ghost? You decide...

"...in the background seems to be a see-through someone that was present at a reception that was given at our community center. It's unfortunate that the head of the person was not captured. There were not any other apparitions appearing in any other photos that day."