Bike Tour Ride

Add to this scene: 5 to 6 cyclists with a tour guide.

- Cyclists on city bikes in a loose line along the most plausible flat surface in the input (path, street, promenade, bike lane)
- Tour guide at front on own bike, professional polo, turning slightly toward the group
- Tourists aged 25–55 in casual activewear, some with small helmets
- Bikes mid-motion (pedals active, natural riding postures)

Match scene lighting, shadow direction, and ground texture. Bikes and people grounded, correct perspective scale.

Do NOT invent a bicycle lane or path that does not exist in the input — only place on surfaces clearly visible and traversable by bicycles (existing road, dedicated lane, wide paved plaza). If the input has no usable flat surface for cycling, return the input unchanged.