Among the orders made by customers in the household segment, how many of them are urgent?
orders in household segment refer to o_orderkey where c_mktsegment = 'HOUSEHOLD'; the order is urgent if o_orderpriority = '1-URGENT' ;
SELECT COUNT(T1.o_orderpriority) FROM orders AS T1 INNER JOIN customer AS T2 ON T1.o_custkey = T2.c_custkey WHERE T2.c_mktsegment = 'HOUSEHOLD' AND T1.o_orderpriority = '1-URGENT'