Uso de duas preposições juntas

Recentemente me deparei com algumas frases na qual "for" e "by" estavam juntas e gostaria de saber o porque elas podem vir juntas, se é devido a palavra que precede elas e como eu poderia traduzir:

- he gives him a return ticket to San Francisco that is paid for by Hitachi Data Systems and says he can stay at her apartment for free.
- certificate shall give rise to the right of priority provided for by this Article, under the same conditions and with the same.
- financial instruments and similar assets owned or contracted FOR BY the Company.
- The UK presidency will see the launch of a period of reflection called for by the European Council

Desde já agradeço,
Lucas.