CREATE TABLE table_18995 ("Abbr." CLOB, "Name" CLOB, "Picture Coding Types" CLOB, "Chroma Format" CLOB, "Aspect Ratios" CLOB, "Scalable modes" CLOB, "Intra DC Precision" CLOB)

what's the chroma format with scalable modes being snr- or spatial-scalable and intra dc precbeingion being 8, 9, 10
SELECT "Chroma Format" FROM table_18995 WHERE "Scalable modes" = 'SNR- or spatial-scalable' AND "Intra DC Precision" = '8, 9, 10'
SELECT "Chroma Format" FROM "table_18995" WHERE "Intra DC Precision" = '8, 9, 10' AND "Scalable modes" = 'SNR- or spatial-scalable'