I want to know the answer to the following question:
The covariance group of the general theory of relativity is the covariance group of how many theories?
All the background I'm provided with is that "The symmetry group of the general theory of relativity includes all differentiable transformations, i.e., all properties of an object are dynamical, in other words there are no absolute objects.". Is that enough to answer the question?
Answer: no