A group of people one of them with a guitar were sitting by the campfire and singing songs.
['sitting', 'by']
['A', 'group', 'of', 'people', 'one', 'of', 'them', 'with', 'a', 'guitar', 'were', 'sitting', 'by', 'the', 'campfire', 'and', 'singing', 'songs.']