How to get vitamin d naturally<br>Learn how the sun creates vitamin d. Sunlight is a form of radiation that has two forms, ultraviolet a (uva) and ultraviolet b (uvb) radiation. Your main source of vitamin d occurs when uvb radiation strikes your skin. When this happens, the first steps of vitamin d synthesis in your body is triggered.
UVA radiation triggers Vitamin D creation
It is triggered by UVB. I think the system got it wrong because the two types of radiation are written very similarly
( z1 trigger :ARG0 ( z2 radiate :ARG0 ( z3 small-molecule :name ( z4 name :op "UVA" ) ) ) :ARG1 ( z5 create :ARG1 ( z6 small-molecule :name ( z7 name :op "vitamin" :op "D" ) ) ) )