Task: Sentence Expansion
Input (English): The close relationship between fig types and their pollinators , and the one-to-one plant-pollinator ratio are a clear example of co-evolution .
Output (English): The intimate association between fig species and their wasp pollinators , along with the high incidence of a one-to-one plant-pollinator ratio have long led scientists to believe that figs and wasps are a clear example of coevolution .