CREATE TABLE table_78228 ("Peak" TEXT, "Height  ( m ) " FLOAT, "Prom.  ( m ) " FLOAT, "Class" TEXT, "Parent" TEXT)

What is the lowest height for Parent grasmoor when it has a Prom larger than 117?
SELECT MIN("Height (m)") FROM table_78228 WHERE "Parent" = 'grasmoor' AND "Prom. (m)" > '117'
SELECT MIN("Height (m)") FROM "table_78228" WHERE "Parent" = 'grasmoor' AND "Prom. (m)" > '117'