Table: campus_info
Columns: campus
year_opened
students
size
location

Question: What campus opened in 1970?
SQL: SELECT "campus" FROM campus_info WHERE "year_opened" = '1970'

Question: What year was the school opened that has a size of 10 acres and students of na?
SQL: SELECT "year_opened" FROM campus_info WHERE "students" = 'na' AND "size" = '10 acres'

Question: What location was the campus that has a size of 245 acres?
SQL: SELECT "location" FROM campus_info WHERE "size" = '245 acres'

Question: What campus was opened in 1977?
SQL: SELECT "campus" FROM campus_info WHERE "year_opened" = '1977'

Question: What location was the campus opened in 2005 with students listed as na?
SQL: SELECT "location" FROM campus_info WHERE "students" = 'na' AND "year_opened" = '2005'