CREATE TABLE table_48197 ("Player" CLOB, "Nationality" CLOB, "Jersey Number ( s ) " FLOAT, "Position" CLOB, "Years" CLOB, "From" CLOB)

What is Years, when Nationality is United States, and when Position is PG / SG?
SELECT "Years" FROM table_48197 WHERE "Nationality" = 'united states' AND "Position" = 'pg / sg'
SELECT "Years" FROM "table_48197" WHERE "Nationality" = 'united states' AND "Position" = 'pg / sg'