Complex sentence: During one evening she was joined by UFO enthusiast, John Oswald, who when asked about Mrs. Hill's continuing UFO observations, Oswald stated, she is not really seeing UFO's but she is calling them that.
Split into simpler sentences: During one evening she was joined by UFO enthusiast, John Oswald. When asked about Betty's continuing UFO observations, Oswald stated, she is not really seeing UFO's but she is calling them that.