Which option satisfies element; solid at room temperature; electrical conductor without carrying any excluded claim from alloy; ferromagnetic; liquid at room temperature?

Answer options

• Option: iron sample
  "iron sample" vs. "copper sample" The iron sample satisfies the three; misses the target mapping. Required claims: element; solid at room temperature; electrical conductor. The task targets this mapping, so iron sample remains wrong in this prompt.
• Option: mercury sample
  "mercury sample" vs. "copper sample" Mercury shares element and conductor; misses the target mapping. Required claims: element; electrical conductor. The task targets this mapping, so mercury sample remains wrong in this prompt.
• Option: brass alloy
  "brass alloy" vs. "copper sample" Brass shares conductor and solid claims; misses the target mapping. Required claims: solid at room temperature; electrical conductor. The task targets this mapping, so brass alloy remains wrong in this prompt.
• Correct: copper sample
  "copper sample" - target The copper sample is documented as an element, solid at room. Required claims: element; solid at room temperature; electrical conductor. The task targets this mapping, and copper sample remains correct in this prompt. Negative evidence: required claims satisfied, excluded claims removed, exactly one candidate remains.

Solution

copper sample

copper sample is correct: this option satisfies element; solid at room temperature; electrical conductor and is not excluded by alloy; ferromagnetic; liquid at room temperature. The prompt targets copper sample, so the graph keeps this mapping stable against close alternatives. Source: Wikidata. As of: 2026-02-13.

Fun fact

multi_fact_elimination requires positive required claims plus negative evidence so exactly one candidate remains without an excluded claim. copper sample carries the additional dataset detail element; solid at room temperature; electrical conductor. The graph therefore uses a multi-hop graph path;