-- database: presto; groups: tpch; tables: supplier,nation,partsupp,lineitem,part
SELECT s_name,
       s_address
FROM supplier,
     nation
WHERE s_suppkey IN (SELECT ps_suppkey
                    FROM partsupp
                    WHERE ps_partkey IN (SELECT p_partkey
                                         FROM part
                                         WHERE p_name LIKE 'forest%')
                      AND ps_availqty > (SELECT 0.5 * sum(l_quantity)
                                         FROM lineitem
                                         WHERE l_partkey = ps_partkey
                                           AND l_suppkey = ps_suppkey
                                           AND l_shipdate >=
    date ('1994-01-01')
  AND l_shipdate
    < date ('1994-01-01') + interval '1' YEAR
    )
    )
  AND s_nationkey = n_nationkey
  AND n_name = 'CANADA'
ORDER BY s_name
