(1)The sky was like a waterdrop
 In shadow of a thorn,
 Clear, tranquil, beautiful,
 Dark, forlorn.
 (5)Lightning along its margin ran;
 A rumour of the sea
 Rose in profundity and sank
 Into infinity.
 Lofty and few the elms, the stars
 (10)In the vast boughs most bright;
 I stood a dreamer in a dream
 In the unstirring night.
 Which phrase from the poem is the best example of imagery