This is the 982nd most frequent Polish word.
ukraińskiej
"Ukraińskiej" means "Ukrainian" (feminine singular or genitive singular).
Here 'ukraińskiej' is used as a singular feminine adjective in the genitive case to describe 'kulturze', which is feminine.
Czytałem wczoraj artykuł o ukraińskiej kulturze.
I read an article about Ukrainian culture yesterday.
Here 'ukraińskiej' operates as a singular feminine adjective in the genitive case to match 'wioski', which is feminine.
Ta fotografia pochodzi z ukraińskiej wioski.
This photograph comes from a Ukrainian village.
In this case, 'ukraińskiej' is a singular feminine adjective in the genitive case used for 'delegacji,' a feminine singular noun.