Is he going to be there when she learns to ride a bicycle?
(he; to be; there; T:when she learns to ride a bicycle) (she; learns; to ride a bicycle) Context(she learns,List([29, 39))):(she; learns to ride; a bicycle)
she learns,List([29, 39))
he she she
to be learns learns to ride
there T:when she learns to ride a bicycle
to ride a bicycle
a bicycle