Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How many words are there in rusyn for the bulgarian word купува (kupuva)?

### Inputs:
table_name: table, columns: ['English word', 'Slovak', 'Czech', 'Rusyn', 'Ukrainian', 'Belarusian', 'Polish', 'Serbo-Croatian', 'Bulgarian']

### Response:
SELECT COUNT Rusyn FROM table WHERE Bulgarian = купува (kupuva)