In this task, you need to count the occurrences of the given word in the given sentence.

Sentence: 'a baseball player is running in a field'. Count the occurrences of the word 'a' in the given sentence.
2

Sentence: 'a collection of furniture is in a living room'. Count the occurrences of the word 'a' in the given sentence.
2

Sentence: 'a microwave a clothing iron and a candles make an unusual grouping'. Count the occurrences of the word 'iron' in the given sentence.

1