Detailed Instructions: 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.
Q: Sentence: 'a gang of bikers riding down a street in front of a building'. Remove all words of length '1' in the given sentence.
A:
gang of bikers riding down street in front of building