Table: sunday_river_valley_municipality
Columns: place
code
area_km_2
population
most_spoken_language

Question: What's the sum of the Area (KM 2) that's got a Population that's smaller than 90?
SQL: SELECT COUNT("area_km_2") FROM sunday_river_valley_municipality WHERE "population" < 90

Question: What's the lowest Code that's got a Most Spoke Language of Xhosa, a Place of Addo Elephant National Park, and an Area (KM 2) that's smaller than 1.08?
SQL: SELECT MIN("code") FROM sunday_river_valley_municipality WHERE "most_spoken_language" = 'xhosa' AND "place" = 'addo elephant national park' AND "area_km_2" < 1.08