Return the names of the contestants whose names contain the substring 'Al' .
select contestant_name from contestants where contestant_name like "%al%"
select contestant_name from contestants where contestant_name like "%al%"
[{'contestant_name': 'Jessie Alloway'}, {'contestant_name': 'Alana Bregman'}, {'contestant_name': 'Allie Rogalski'}, {'contestant_name': 'Kurt Walser'}]