Provide the theme summaries for the following conversation: 

Freddie: Yesterday I went to the park with my nephew and saw so many obese children! So sad! :(
Kevin: they aren't even over-weight they are simply obese these days!
Harry: i didn't see a single obese child when we were children!
Freddie: i know. shocking!
Harry: why do you think that is?
Kevin: they get rubbish like junk food, sweets, fizzy drinks with loads of sugar etc
Freddie: but first of all they don't move! just sit there playing games!
Harry: i feel sorry for them! adults are responsible for it! 
Kevin: you're right
Freddie: this is our responsibility to teach children what's right and what's wrong

Summary: 
Freddie was sad to see so many obese children yesterday. Nowadays children have an unhealthy diet and they do not move much. Ultimately, the adults are responsible for this.