Anchor: So, the argument that we would simply have to find new buyers for government bonds is beside the point in the short run--and irrelevant in the long run, when Social Security will stop running surpluses.
Entailed: Social Security, at some point, will no longer run surplusses.
Contradiction: We will have to find new buyers for government bonds when Social Security stops running surpluses.
Contradiction: the person is flying a helicopter
Contradiction: A person is eating seafood while upset.
Contradiction: There will be multiple databases where the single portal will operate. 
Contradiction: A duck splashing around.