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.
Input: Sentence: 'a phone battery lies on a table next to a cell phone which is open to reveal a second battery'. Remove all words of length '1' in the given sentence.
Output:
phone battery lies on table next to cell phone which is open to reveal second battery