Question: Which of these must occur for sediments to form new rock?
Answer: recrystallization
Hypothesis: recrystallization must occur for sediments to form a new rock
Supporting facts: sent1: to decompose means to decay sent2: decomposition is a kind of process sent3: sedimentary rock is made of sediment sent4: sand is a kind of sediment sent5: exposure to extreme heat and pressure changes / metamorphoses sedimentary / igneous rock into metamorphic rock sent6: alteration means change sent7: if something is a stage in a process then that something is required for that process sent8: recrystallization is a kind of event sent9: to decompose means to separate sent10: new means different from the former one sent11: decomposing is similar to separating sent12: the formation of metamorphic rock is a sequential process, with stages of rock being compacted, heated, recrystallized sent13: rocks dissolving is a kind of chemical change sent14: if something changes to something else then that something else is formed from that something sent15: if something is required then that something must be provided sent16: if something causes a process then that something is required for that process sent17: desublimation / deposition means matter / a substance changes from a gas into a solid by decreasing heat energy sent18: if an event is required for a process then that event must occur before that process can occur sent19: formation in the rock cycle means an old class of rocks changes into a new class of rocks sent20: must have means require sent21: crystallization is similar to crystallizing sent22: a process usually requires all of the stages in that process sent23: chemical weathering is a kind of weathering sent24: the rock cycle is a cyclical process, with stages of formation, weathering, erosion sent25: if an event occurs by adding something then that event requires that something
Reasoning: [BECAUSE] the formation of metamorphic rock is a sequential process, with stages of rock being compacted, heated, recrystallized [AND] if something is a stage in a process then that something is required for that process [INFER] int1: recrystallization is required for the process of the formation of metamorphic rock [BECAUSE] if an event is required for a process then that event must occur before that process can occur [AND] recrystallization is a kind of event [INFER] int2: if recrystallization is required for a process then recrystalization must occur before that process can occur [BECAUSE] int1 [AND] int2 [INFER] int3: recrystallization must occur for the formation of metamorphic rock to occur [BECAUSE] if something changes to something else then that something else is formed from that something [AND] exposure to extreme heat and pressure changes / metamorphoses sedimentary / igneous rock into metamorphic rock [INFER] int4: metamorphic rock is formed from sedimentary rock [BECAUSE] int4 [AND] sedimentary rock is made of sediment [INFER] int5: metamorphic rock is formed from sediment [BECAUSE] int3 [AND] int5 [INFER] int6: recrystallization must occur for sediments to form metamorphic rock [BECAUSE] int6 [AND] formation in the rock cycle means an old class of rocks changes into a new class of rocks [INFER] int7: recrystallization must occur for sediments to form a new rock