I want to know the answer to the following question:
What organization was responsible for the planting of several cherry blossom trees in 1973?
All the background I'm provided with is that "The annual Wooster Square Cherry Blossom Festival commemorates the 1973 planting of 72 Yoshino Japanese Cherry Blossom trees by the New Haven Historic Commission in collaboration with the New Haven Parks Department and residents of the neighborhood.". Is that enough to answer the question?