For 100 meters, or the length of the football field, the kids begin running slowly, increase their speed until they end at a full sprint.
(the kids; increase; their speed; T:until they end at a full sprint) (they; end; at a full sprint) (the kids; begin; running slowly; T:For 100 meters, or the length of the football field) Context(the kids begin,List([53, 67))):(the kids; begin running slowly running slowly; )
the kids begin,List([53, 67))
the kids they the kids the kids
increase end begin begin running slowly running slowly
their speed T:until they end at a full sprint
at a full sprint
running slowly T:For 100 meters, or the length of the football field