CREATE TABLE table_15977768_1 (centennial VARCHAR, akimel_a_al_the_name_is_tohono_oodham_for_children_of_the_river VARCHAR)

Name the centennial for 1992 akimel
SELECT centennial FROM table_15977768_1 WHERE akimel_a_al_the_name_is_tohono_oodham_for_children_of_the_river = "1992"
SELECT "centennial" FROM "table_15977768_1" WHERE "1992" = "akimel_a_al_the_name_is_tohono_oodham_for_children_of_the_river"