Wait for event - wait for token.pulled to exist

[miyeDP27D]

I'm not sure how to do this, hopefully someone can help me. I want to pull a resource the list and I put no wait timer, back order on entry list to move on with other activities first, at some point I will need to use that resource. I want to check if the resource managed to get pulled already by the time I reached activity A, but how do I do this? If its not pulled yet, then wait until it succesfully gets pulled, otherwise wait until then before the token moves on to the next activity. 

[FelixMoehlmann]

I would split off a separate token that is responsible for pulling the resource. In the attached model I set the Split activity to create the new token as a child token that only accesses labels on the parent, so the resource will get assigned to the parent token.