Professor David Fankhauser began the tradition with a class of 15 students and their friends after demonstrating how to tap the nearby maple trees for sap, then boil the sap into real maple syrup.
(Professor David Fankhauser; began; the tradition; with a class of 15 students and their friends; T:after demonstrating how to tap the nearby maple trees for sap, then boil the sap into real maple syrup) Context(Professor David Fankhauser began,List([0, 32))):(Professor David Fankhauser; began the tradition after demonstrating; how to tap the nearby maple trees for sap, then boil the sap into real maple syrup)
Professor David Fankhauser began,List([0, 32))
Professor David Fankhauser Professor David Fankhauser
began began the tradition after demonstrating
the tradition with a class of 15 students and their friends T:after demonstrating how to tap the nearby maple trees for sap, then boil the sap into real maple syrup
how to tap the nearby maple trees for sap, then boil the sap into real maple syrup