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

Sentence: 'a train going over a bridge that is over water'. Count the occurrences of the word 'a' in the given sentence.
2

Sentence: 'a plate of food with bread fried crab cole slaw a lemon tomato pickle and lettuce on it'. Count the occurrences of the word 'of' in the given sentence.
1

Sentence: 'a group of men standing on top of a baseball field'. Count the occurrences of the word 'top' in the given sentence.
1