Semanticscience Integrated Ontology	Placental Genetic Variance	Source
http://semanticscience.org/resource/SIO_001329	https://pat.nichd.nih.gov/patgeneticvariance/GV.03.04.01	LOOM
http://semanticscience.org/resource/SIO_000988	https://pat.nichd.nih.gov/patgeneticvariance/GV.03.10	LOOM
http://semanticscience.org/resource/SIO_001328	https://pat.nichd.nih.gov/patgeneticvariance/GV.03.01	LOOM