Look at the code below. It prints a dependency tree of the given sentence. The tree is represented in the following way: X --> Y, where X is the head of each phrase, and Y is the dependant word.
However, one part of the code is replaced with *. Print what should be instead of *.
import spacy
en_sm_model = spacy.load("en_core_web_sm")
doc = en_sm_model("London was built many years ago.")
for i in doc:
print("{0} --> {1}".format(*, i.text))
# built --> London
# built --> was
# built --> built
# years --> many
# ago --> years
# built --> ago
# built --> .