How many suppliers from Egypt have a debit balance?
suppliers refer to s_suppkey; Egypt is the name of the nation which refers to n_name = 'EGYPT'; the balance is in debt if s_acctbal < 0;
SELECT COUNT(T1.s_suppkey) FROM supplier AS T1 INNER JOIN nation AS T2 ON T1.s_nationkey = T2.n_nationkey WHERE T1.s_acctbal < 0 AND T2.n_name = 'EGYPT'