Could you guys please explain about these sentences?

  1. One such proposal is FOR the vertical farm.
  2. The concept is OF multi-storey buildings

I can't understand about FOR and OF in these sentences.

'Many believe an entirely new approach to indoor farming is required, employing cutting-edge technologies. One such proposal is FOR the ‘Vertical Farm’. The concept is OF multi-storey buildings in which food crops are grown in environmentally controlled conditions.'

Can 'consist of' be used as the same meaning as 'be of' in this context? Are there any other words or terms to replace these words in this instance?

  • I tried to answer this question but couldn't. "For" and "of" have many definitions.
    – Ringo
    Oct 26, 2017 at 6:44
  • The collocation is "to conceive of something" and this relationship of of to the verb persists in related nouns (conceive -> concept, conception). The concept is of X, his conception of X...
    – TimR
    Oct 26, 2017 at 12:42
  • And the subject of a proposal is often introduced by for. "The city council are voting on a proposal for a new park." "To propose for" is the verbal collocation. That which is proposed is the complement/object of for. "They proposed for the city to create a new park."
    – TimR
    Oct 26, 2017 at 12:47

1 Answer 1


There are so many definitions, but I would go with these:

  1. preposition
    You use for after nouns expressing reason or cause.
    He's soon to make a speech in parliament explaining his reasons for going.
    The county hospital could find no physical cause for Sumner's problems.
    He has now been formally given the grounds for his arrest.

and of:

  1. preposition
    You use of to indicate the materials or things that form something.
    ...local decorations of wood and straw.
    ...loose-fitting garments of linen.
    ...a mixture of paint-thinner and petrol

To me, the better approach is to use alternate wording that is more specific and omits such ambiguous usage. For example:

The vertical farm is one such proposal.
The concept is of multi-storey buildings.

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