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 bear rolling on his back on some logs'. Remove all words of length '2' in the given sentence.
a bear rolling his back some logs

Sentence: 'two large birds strutting inside of a fence'. Remove all words of length '5' in the given sentence.
two strutting inside of a

Sentence: 'a lone and empty trolley car going down the track'. Remove all words of length '4' in the given sentence.

a and empty trolley car going the track