CREATE TABLE table_28991 ("Proto-Slavic" CLOB, "Russian" CLOB, "Ukrainian" CLOB, "Belarusian" CLOB, "Polish" CLOB, "Czech" CLOB, "Slovak" CLOB, "Slovene" CLOB, "Serbo-Croatian" CLOB, "Bulgarian" CLOB, "Macedonian" CLOB)

When ( ) / gn(ij)ezdo is the serbo-croatian how many proto-slavics are there?
SELECT COUNT("Proto-Slavic") FROM table_28991 WHERE "Serbo-Croatian" = 'гн(иј)ездо / gn(ij)ezdo'
SELECT COUNT("Proto-Slavic") FROM "table_28991" WHERE "Serbo-Croatian" = 'гн(иј)ездо / gn(ij)ezdo'