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

[Q]: Sentence: 'a pink toothbrush and a blue toothbrush sitting in a clear glass toothbrush holder by a mirror'. Count the occurrences of the word 'toothbrush' in the given sentence.
[A]: 3


[Q]: Sentence: 'the soldier on horseback statue stands guard over the citys residences and buildings'. Count the occurrences of the word 'the' in the given sentence.
[A]: 2


[Q]: Sentence: 'cars and a van sitting on a ferry as it travels across a river'. Count the occurrences of the word 'a' in the given sentence.
[A]:
3