In the case of the latter, some function is not synonymous with original function / function in other organisms and you ignore those examples which clearly provide no benefit. (religion.blogs.cnn.com)
In the adjoining gallery space, two installations are placed as if to partition rooms, in allusion to the building's original function as a hotel. (dailyserving.com)
Green Tripe is a great source of essential fatty acids, as well as many plant - derived nutrients due to it's original function in a herbivore's digestive system. (raisingrascal.com)