Assertion: gratitude | /r/HasProperty | duty
Facets:
Source sentences:
text: Gratitude is a duty which ought to be paid, but which none have a right to expect.
text: Gratitude is a duty which ought to be paid, but which none have a right to expect.”— Jean-Jacques Rousseau
text: Gratitude is a duty none can be excused from, because it is always at our own disposal.