secondary source subgroup of source, 9 assertions
CapableOf 4
interpret primary sourc… 0.68
involve generalization 0.25
involve evaluation of t… 0.25
analyze primary sources 0.25
HasProperty 1
useful 0.25
IsA 3
primary source 0.60
document 0.39
one step 0.25
ReceivesAction 1
listed in the bibliogra… 0.25