Assertion: coffin's lid | /r/HasSubevent | the grave
Facets:
value: often
type: TEMPORAL
Source sentences:
text: In London clay graves dug and people buried in them 'drop' after a few months, this is the result of the lid of the coffin falling in, often resulting in the grave needing to be 'topped up' with extra soil, London clay is very deterimentral to the solidity of a coffin, the average daily temprature is also condusive to rotting of the sorpse, especially during summer months.