In this task, you need to remove all words of a given length in the sentence. The number of letters in a word determine its length, for example, the length of the word "apple" is 5.

Sentence: 'a small cow standing on a lush green field'. Remove all words of length '5' in the given sentence.
a cow standing on a lush

Sentence: 'a black and green halloween cake with orange writing and various halloween toppings'. Remove all words of length '8' in the given sentence.
a black and green halloween cake with orange writing and various halloween

Sentence: 'a group of young ladies sitting in front of a table'. Remove all words of length '6' in the given sentence.

a group of young sitting in front of a table