question:
Calypso tents, also originating in Trinidad, feature cadres of musicians who perform biting social commentaries, political exposes or rousing exhortations to "wuk dah waistline" and "roll dat bumper".
Who perform biting social commentaries?

answer: yes

question:
While these older letters have been abandoned at one time or another, they may be used in this and related articles.
What did the old letter become?

answer: no

question:
This environmental intervention was closely linked to the conceptualisation of the processes of environmental change and helped establish the roots of environmentalism.
What did scientists attempt to boost artificially on Saint Helena?

answer: no

question:
Other influential writers and thinkers have included the Swiss humanitarian Johann Heinrich Pestalozzi; the American transcendentalists Amos Bronson Alcott, Ralph Waldo Emerson, and Henry David Thoreau; the founders of progressive education, John Dewey and Francis Parker; and educational pioneers such as Maria Montessori and Rudolf Steiner, and more recently John Caldwell Holt, Paul Goodman, Frederick Mayer, George Dennison and Ivan Illich.
Who from Switzerland was an influential in education?

answer:
yes