Assertion: shad | /r/HasProperty | trawled at about 50 fathoms
Facets:
value: off nova scotia
type: LOCATION
value: in march
type: TEMPORAL
Source sentences:
text: The most direct evidence as to the depths to which they may descend is that shad have been trawled at about 50 fathoms off Nova Scotia in March (see footnote 22, p. 112), and at 26 to 68 fathoms off southern New England in May (footnote 23, p. 112).