Small birds eat ground shells or sand to help digest their seeds.
(Small birds; eat; ground shells or sand; to help digest their seeds) Context(Small birds eat,List([0, 15))):(Small birds; eat ground shells or sand to help; digest their seeds) Context(Small birds eat to help,List([0, 45))):(Small birds; eat ground shells or sand to help digest; their seeds)
Small birds eat,List([0, 15)) Small birds eat to help,List([0, 45))
Small birds Small birds Small birds
eat eat ground shells or sand to help eat ground shells or sand to help digest
ground shells or sand to help digest their seeds
digest their seeds
their seeds