Our heart must then pump faster to feed the oxygen in the blood to the muscles.
(Our heart; must pump faster; to feed the oxygen in the blood to the muscles; T:then) Context(Our heart must pump faster,List([0, 31))):(Our heart; must pump faster to feed; the oxygen)
Our heart must pump faster,List([0, 31))
Our heart Our heart
must pump faster must pump faster to feed
to feed the oxygen in the blood to the muscles T:then
the oxygen