What is the GDP (PPP) (USD, per capita) for Algeria? 
CREATE TABLE table_2155836_1 (_per_capita_ VARCHAR, gdp__ppp___usd INTEGER, country VARCHAR)
SELECT MIN(gdp__ppp___usd), _per_capita_ FROM table_2155836_1 WHERE country = "Algeria"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_2155836_1 (_per_capita_ VARCHAR, gdp__ppp___usd INTEGER, country VARCHAR) Question: What is the GDP (PPP) (USD, per capita) for Algeria?  [/INST] SELECT MIN(gdp__ppp___usd), _per_capita_ FROM table_2155836_1 WHERE country = "Algeria" </s>