question: Name the lower index kcal/ nm3 for 61.32
answer: SELECT lower_index_kcal__nm_3 FROM table_1868929_1 WHERE upper_index_mj__nm_3 = "61.32"
context: CREATE TABLE table_1868929_1 (lower_index_kcal__nm_3 VARCHAR, upper_index_mj__nm_3 VARCHAR)