"Where are the tips of the grass blades when you go fishing?"
This sentence may refer to the location of the grass blades in relation to the fishing spot. A more explicit description could be:
"A picture of a peaceful fishing spot near a lush green meadow. The tips of the grass blades, bathed in soft morning light, can be seen in the foreground while a calm river shimmers in the background. A solitary angler sits by the river, his fishing rod cast out in the