 Let’s turn to Parsons’s response to the existence problem. The naive comprehension principle faced the problem of generating an existent winged horse. Because existence is an extra-nuclear property, however, Parsons’s version of the comprehension principle, which correlates sets of only nuclear properties to objects, avoids this problem. The condition of being an existent winged horse is not composed solely of nuclear properties and so Parsons’s principle does not correlate it to an object. Parsons’s distinction between nuclear and extra-nuclear properties similarly promises to solve the problem of incomplete objects. Recall our singer from above. That object does not have exactly one property; instead, it has exactly one nuclear property. As having exactly one nuclear property is itself an extra-nuclear property, much as being a complete object is on Parsons’s view, the threat of contradiction is avoided. 