In spring, increasing length of daylight causes her to become ready for mating.
(increasing length of daylight; causes; her to become ready for mating; T:In spring) Context(increasing length of daylight causes,List([11, 47))):(her; to become; ready for mating)
increasing length of daylight causes,List([11, 47))
increasing length of daylight her
causes to become
her to become ready for mating T:In spring
ready for mating