Does "This pericardial sac is filled with a serous fluid for lubrication." contain the correct answer to "What lubricates the pericardial sac?"

A: yes

Does "This is the plesyomorphic condition among viviparous mammals; the presence of epipubic bones in all non-placental mammals prevents the expansion of the torso needed for full pregnancy." contain the correct answer to "Which sub class are most viviparous mammals in?"

A: no

Does "He may have had further unacknowledged illegitimate offspring as well, such as Eugen Megerle von Muhlfeld by Emilie Victoria Kraus and Helene Napoleone Bonaparte (18161907) by Albine de Montholon." contain the correct answer to "DNA from Alexandre Colonna-Walewski's descendants has been used to confirm what attribute of Napoleon's?"

A:
no