Well since adcoms only care about research experience if it involves you directly implementing the scientific method, you should basically do whatever you can in secondaries & interviews to couple what you wrote in the activity description to the scientific method. Talk about how you made an original observation, and how the literature you studied provided background knowledge to generate an informed, original hypothesis. Then, perhaps talk about how you came up with a way to theoretically test that hypothesis, and what different results of this theoretical experiment would allow you to conclude.
Obviously, don't lie. I'm just assuming this is along the lines of what you did. And if you've already written that you couldn't actually do an experiment, saying something like what I described above would be the best option you have at this point IMO. Keep in mind I'm just a premed, though.