Definition: 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.
Input: Sentence: 'a man tossing soccer balls to three men who are standing in front of a goal net while people watch from the stands'. Remove all words of length '1' in the given sentence.

man tossing soccer balls to three men who are standing in front of goal net while people watch from the stands