When the birds begin building a nest they will keep the wasps out most of the time.
(they; will keep; the wasps; out; T:most of the time) (the birds; begin; building a nest) Context(the birds begin,List([5, 20))):(the birds; begin building; a nest they will keep the wasps out most of the time)
the birds begin,List([5, 20))
they the birds the birds
will keep begin begin building
the wasps out T:most of the time
building a nest
a nest they will keep the wasps out most of the time