http://purl.obolibrary.org/obo/IAO_0000104 # plan specification
http://purl.obolibrary.org/obo/IAO_0000109 # measurement datum
http://purl.obolibrary.org/obo/IAO_0000100 # data set
http://purl.obolibrary.org/obo/IAO_0000584 # time sampled measurement data set
http://purl.obolibrary.org/obo/IAO_0000582 # time stamped measurement datum
http://purl.obolibrary.org/obo/IAO_0000032 # scalar measurement datum
http://purl.obolibrary.org/obo/IAO_0000136 # is about
http://purl.obolibrary.org/obo/IAO_0000221 # is quality measurement of
