Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_19 (round VARCHAR, opponent VARCHAR, venue VARCHAR)
### Question:
what round saw wakefield trinity wildcats u21 as the opponenet at belle vue?
### Answer:
SELECT round FROM table_name_19 WHERE opponent = "wakefield trinity wildcats u21" AND venue = "belle vue"