Related Clues:

• E.g. nitrogen
• A fuel
• Something highly entertaining from Gilbert and Sullivan, initially
• I will be recognised as one in the chemistry group
• Henry has information about oxygen and iodine, perhaps
• American fuel
• CO, for example, leads in generating appropriate strategy
• Something exciting
• It can be natural
• It may be noble or natural
• Talk idly; fuel
• Fastball, in baseball lingo
• Neon, or fuel for a Neon
• Home-heating fuel
• What might come in main talk