Assertion: sea lamprey | /r/CapableOf | gain access
Facets:
value: by the mid-1900s
type: TEMPORAL
value: during the early 20th century
type: TEMPORAL
value: to the lakes
type: TRANSITIVE-OBJECT
value: via canals
type: TRANSITIVE-OBJECT
Source sentences:
text: It is generally believed that they gained access to the lakes via canals during the early 20th century, but this theory is controversial.
text: By the mid-1900s, sea lamprey had gained access and established self-sustaining populations in all five of the Great Lakes and nearly decimated the native fish populations.
text: However, when the Welland Canal, constructed to bypass the falls, was deepened in 1919, sea lampreys gained access to the rest of the Great Lakes.