# Skipwith Pond has a first-class property called link.evidence
data(SkipwithPond)
TLP(SkipwithPond, 'link.evidence')
# Benguela has a first-class property called diet.fraction
data(Benguela)
TLP(Benguela, 'diet.fraction')
# All NA
TLP(SkipwithPond, 'not a property')
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