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 man is in a grassy field with animals'. Remove all words of length '7' in the given sentence.
a man is in a grassy field with

Sentence: 'a motircycle parked on a side walk near a building'. Remove all words of length '2' in the given sentence.
a motircycle parked a side walk near a building

Sentence: 'a line of stuffed toys is placed on the sidewalk'. Remove all words of length '7' in the given sentence.

a line of toys is placed on the sidewalk