A patient recovering from a brain injury is being assessed. The patient can successfully learn and recall that the capital of Australia is Canberra. They can also learn the rules of a new card game and explain them to someone else. However, when asked, the patient cannot remember the specific therapy session where they learned the capital, nor can they recall the experience of playing the card game for the first time yesterday. Based on this case, which of the two distinct memory systems for previous events and factual knowledge is primarily impaired, and which is relatively intact? Justify your reasoning.