49685d02_nt_Convention___iusmentis_com___Basis_in_priority_document
[Claim] A bicycle comprising the lamp of claim 1 releasably fastened to the bicycle. [Benefit of priority?] Yes. The combination of lamp and bicycle is literally mentioned. The feature of "nuts and bolts" implicitly discloses "releasably fastened". [Basis in priority document] 
"This lamp can be installed on vehicles such as bicycles, for example using nuts and bolts to mount the lamp on the bicycle."
Priority under the European Patent Convention (EPC) (in Patents > European Patent Convention @ iusmentis.com)
Basis in priority document