What are the details of the shops that can be accessed by walk?
create table tourist_attractions (tourist_attraction_id varchar, how_to_get_there varchar, PRIMARY KEY (tourist_attraction_id)); create table shops (shop_details varchar, shop_id varchar, PRIMARY KEY (shop_details))
select t1.shop_details from shops as t1 join tourist_attractions as t2 on t1.shop_id = t2.tourist_attraction_id where t2.how_to_get_there = "walk"