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_26757_4 (proto_slavic VARCHAR, serbo_croatian VARCHAR)
### Question:
When  гн(иј)ездо / gn(ij)ezdo is the serbo-croatian how many proto-slavics are there?
### Answer:
SELECT COUNT(proto_slavic) FROM table_26757_4 WHERE serbo_croatian = "гн(иј)ездо / gn(ij)ezdo"