( ( A ( non-silver photograph ) ) ( ( is ( made ( by ( placing ( ( a ( negative ( ( ( directly ( on ( paper ( that ( 's ( been ( coated ( with ( a ( special emulsion ) ) ) ) ) ) ) ) ) ) ( , ( then ( ( exposing it ) ( to ultraviolet ) ) ) ) ) light ) ) ) ( in ( ( the form ) ( of ( ( ( either sunlight ) or ) ( black light ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (JJ non-silver) (NN photograph)) (VP (VBZ is) (VP (VBN made) (PP (IN by) (S (VP (VBG placing) (NP (NP (DT a) (JJ negative) (UCP (PP (ADVP (RB directly)) (IN on) (NP (NP (NN paper)) (SBAR (WHNP (WDT that)) (S (VP (VBZ 's) (VP (VBN been) (VP (VBN coated) (PP (IN with) (NP (DT a) (JJ special) (NN emulsion)))))))))) (, ,) (S (RB then) (VP (VBG exposing) (NP (PRP it)) (PP (TO to) (NP (NN ultraviolet)))))) (NN light)) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NP (DT either) (NN sunlight)) (CC or) (NP (JJ black) (NN light)))))))))))) (. .)))
A non-silver photograph is made by placing a negative directly on paper that's been coated with a special emulsion, then exposing it to ultraviolet light in the form of either sunlight or black light.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (VP (VBN placed) (PP (IN in) (NP (JJ direct) (NN sunlight)))))) (, ,) (NP (DT a) (JJ black) (NN sweater)) (VP (MD will) (VP (VB absorb) (NP (DT the) (ADJP (RBS most) (JJ visible)) (NN light) (NN energy)))) (. .)))