buried in a communal grave
...that the 18th-century composer Wolfgang Amadeus Mozart was buried in a communal grave?
...that the 18th-century composer <a href="./Wolfgang_Amadeus_Mozart" id="mwCW8" rel="mw:WikiLink" title="Wolfgang Amadeus Mozart">Wolfgang Amadeus Mozart</a> <i id="mwCXA">(pictured)</i> was <b id="mwCXE"><a href="./Death_of_Wolfgang_Amadeus_Mozart" id="mwCXI" rel="mw:WikiLink" title="Death of Wolfgang Amadeus Mozart">buried in a communal grave</a></b>?