user: Question: What is the lowest population census from 1999 with an Area (km²) of 4225, and a Population per km² (2009) fewer than 32.6?
Columns: ['Province', 'Capital', 'Area (km²)', 'Population census 1999', 'Population per km² (2009)', 'Population census 2009']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['Central Province', 'Tulagi', 615.0, 21577.0, 42.4, 26051.0]
SQL:

assistant: SELECT MIN("Population census 1999") FROM "Table" WHERE "Area (km²)" = 4225.0 AND "Population per km² (2009)" < 32.6;