Task: Question Answering
Input (English): Process:  -A bird picks a spot high spot, often in a tree -The bird collects bits of sticks and grass -The sticks and grasses are placed between support branches -Leaves, mud and spider webs are added to the sticks -The mud, leaves and webs glue the sticks together -The solid nest supports the eggs -
 Question: What is the effect of Less rivers are dredged on more leaves are added to the nest.?
Output (English): none