Table: superdelegate_2008
Columns: state_or_territory
hillary_clinton
barack_obama
uncommitted
unassigned
total

Question: What is the lowest number of uncommitted superdelegates for a state with more than 16 total and 2 for Hillary Clinton?
SQL: SELECT MIN("uncommitted") FROM superdelegate_2008 WHERE "total" > 16 AND "hillary_clinton" = 2