Table: gastao_elias_davis_cup
Columns: edition
round
date
partnering
against
surface
opponents
w_l
result

Question: Who are all the opponents of Slovakia?
SQL: SELECT "opponents" FROM gastao_elias_davis_cup WHERE "against" = 'Slovakia'

Question: What is the name of the round against the opponents jesse huta galung peter wessels?
SQL: SELECT "round" FROM gastao_elias_davis_cup WHERE "opponents" = 'Jesse Huta Galung Peter Wessels'