Q: I'm trying to find documentation of the origin of the common name "Joshua Tree" for Yucca brevifolia as representing the Biblical Joshua signalling the Promised Land 
(the Biblical Joshua; signalling; the Promised Land) (I; 'm trying; to find documentation of the origin of the common name) Context(I 'm trying,List([3, 13))):(I; 'm trying to find; documentation of the origin of the common name)
I 'm trying,List([3, 13))
the Biblical Joshua I I
signalling 'm trying 'm trying to find
the Promised Land
to find documentation of the origin of the common name
documentation of the origin of the common name