10. The computer storage medium of claim 8 , wherein identifying, by one or more processors of an entity management system, a cluster of immutable observations that represents the entity using the context comprises: generating a query from one or more of the plurality of attribute values; identifying a plurality of candidate clusters responsive to the query; calculating a respective score for each of the plurality of candidate clusters based on comparison of at least one of the plurality of attribute values to an attribute value of respective candidate cluster; and identify the candidate cluster with the highest score as the cluster that represents the entity.
10. The computer storage medium of claim 8 , wherein identifying, by one or more processors of an entity management system, a cluster of immutable observations that represents the entity using the context comprises: generating a query from one or more of the plurality of attribute values; identifying a plurality of candidate clusters responsive to the query; calculating a respective score for each of the plurality of candidate clusters based on comparison of at least one of the plurality of attribute values to an attribute value of respective candidate cluster; and identify the candidate cluster with the highest score as the cluster that represents the entity. 11. The computer storage medium of claim 10 , wherein calculating a respective score for each of the plurality of candidate clusters comprises assigning a zero score if an address in the context and the address in a respective candidate cluster do not match.