Assertion: sperm bank's sperm | /r/HasProperty | stored
Facets:
Source sentences:
text: It has been proposed that there should be an upper limit on how long frozen sperm can be stored, however a baby has been conceived in the UK using sperm frozen for 21 years.
text: It has been proposed that there should be an upper limit on how long frozen sperm can be stored; however, a baby has been conceived in the United Kingdom using sperm frozen for 21 years and andrology experts believe sperm can be frozen indefinitely.