In this task, you're given five sentences, numbered 1 through 5. Your job is to generate a title for the story that makes complete sense. The title must be short, with less than three words, use simple language, and include the main topic of the story.

Sentence 1: Ian put up a tall VHF tower beside his house. Sentence 2: He started picking up what sounded like aliens talking. Sentence 3: Ian recorded the sounds and took it to a local professor. Sentence 4: The professor listened intently and was able to identify the talking. Sentence 5: He told Ian it wasn't aliens but only foreign spies with hand radios.
Aliens Chatting