| alternative(noun, form, shape, construction) |
| attestation(noun, state, situation, status) |
| choice(noun, state, situation, status) |
| clue(noun, state, situation, status) |
| condition(noun, organisation, system, structure) |
| demonstration(noun, state, situation, status) |
| doubt(noun, state, situation, status) |
| enquiry(noun, state, situation, status) |
| evidence(noun, state, situation, status) |
| guide(noun, state, situation, status) |
| hint(noun, state, situation, status) |
| indication(noun, state, situation, status) |
| investigation(noun, state, situation, status) |
| mark(noun, state, situation, status) |
| pointer(noun, state, situation, status) |
| possibility(noun, question, extent, might, fate) |
| reasoning(noun, organisation, system, structure) |
| sign(noun, state, situation, status) |
| signal(noun, state, situation, status) |
| symptom(noun, state, situation, status) |