Alamy discover the Human Genome

A few years ago I placed a bunch of pictures with Alamy. I just received an email from them complaining that one of my pictures of a bunch of garden gnomes "clearly shows people in it" and that I had "annotated the field "No of people" as "0"". They warn me that "Our customers rely on the accuracy and integrity of our data and this process protects both you and Alamy from potential legal disputes." I am wondering whether Alamy have discovered something about garden gnomes that I don't know. Perhaps they come alive and turn into real little people at night? How does one get a garden gnome to sign a model release? Here it is, what do you think, do the gnomes look litigious?:

 

CROWD OF ANGRY GNOMES
CROWD OF ANGRY GNOMES