user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: what's the legal status of drug formulations for which pinus palustris pollen is an active ingredient? 
Knowledge Triplets: Longleaf pine 40000 injectable solution, medicine.drug_formulation.strength, m.0hyj5lj
Biologic, medicine.drug_formulation_category.drug_formulations, Longleaf pine 0.05 injectable solution
Pinus palustris pollen, medicine.drug_ingredient.active_moiety_of_formulation, Longleaf pine 10000 injectable solution
Longleaf pine 0.1 injectable solution, medicine.drug_formulation.formulation_of, Pinus palustris pollen extract
Pinus palustris pollen, medicine.drug_formulation.active_ingredient_moieties, Longleaf pine 20000 injectable solution
Pinus palustris pollen, medicine.drug_ingredient.active_ingredient_of_formulation, Longleaf pine 40000 injectable solution
Longleaf pine 40000 injectable solution, medicine.drug_formulation.drug_category, Biologic
Longleaf Pine 20000 injectable solution, medicine.manufactured_drug_form.manufactured_form_of, Longleaf pine 20000 injectable solution
Pinus palustris pollen extract, medicine.drug.routed_drugs, Pinus Palustris Pollen Extract Intradermal
m.0hycqk6, medicine.drug_strength.strength_units, [PNU]/mL
Longleaf Pine 40000 injectable solution, medicine.manufactured_drug_form.manufactured_form_of, Longleaf pine 40000 injectable solution
Pinus Palustris Pollen Extract Intradermal, medicine.routed_drug.marketed_formulations, Longleaf pine 0.1 injectable solution
m.0hym6y_, medicine.drug_strength.strength_units, g/mL
Longleaf pine 20000 injectable solution, medicine.drug_formulation.dosage_form, Injectable solution
Pinus palustris pollen extract, medicine.drug.marketed_formulations, Longleaf pine 0.05 injectable solution
Intradermal, medicine.drug_administration_route.drug_formulations, Longleaf pine 0.1 injectable solution
Injectable solution, medicine.drug_dosage_form.formulations_available_in_this_form, Longleaf pine 0.1 injectable solution
Longleaf pine 10000 injectable solution, medicine.drug_formulation.dosage_form, Injectable solution
Intradermal, medicine.drug_administration_route.drug_formulations, Longleaf pine 0.05 injectable solution
Pinus Palustris Pollen Extract Intradermal, medicine.routed_drug.marketed_formulations, Longleaf pine 40000 injectable solution
Injectable solution, medicine.drug_dosage_form.formulations_available_in_this_form, Longleaf pine 0.05 injectable solution
Subcutaneous injection, medicine.drug_administration_route.drug_formulations, Longleaf pine 20000 injectable solution
Longleaf pine 0.05 injectable solution, medicine.drug_formulation.brand_names, Longleaf Pine
Pinus Palustris Pollen Extract Intradermal, medicine.routed_drug.marketed_formulations, Longleaf pine 10000 injectable solution
Longleaf pine 10000 injectable solution, medicine.drug_formulation.routes, Subcutaneous injection
Longleaf pine 0.1 injectable solution, medicine.drug_formulation.active_ingredient_moieties, Pinus palustris pollen
Pinus palustris pollen extract, medicine.drug.marketed_formulations, Longleaf pine 40000 injectable solution
Longleaf pine 0.1 injectable solution, medicine.drug_formulation.brand_names, Longleaf Pine
Longleaf pine 40000 injectable solution, medicine.drug_formulation.dosage_form, Injectable solution
m.0hyj5lj, medicine.drug_strength.active_ingredient, Pinus palustris pollen
Pinus palustris pollen extract, medicine.drug.active_moieties, Pinus palustris pollen
Longleaf pine 0.1 injectable solution, medicine.drug_formulation.routes, Intradermal
Pinus palustris pollen extract, medicine.drug.legal_status, Prescription drug
Longleaf pine 0.05 injectable solution, medicine.drug_formulation.active_ingredients, Pinus palustris pollen
Biologic, medicine.drug_formulation_category.drug_formulations, Longleaf pine 10000 injectable solution
Longleaf pine 0.1 injectable solution, medicine.drug_formulation.manufactured_forms, Longleaf Pine 0.1 injectable solution
Longleaf pine 40000 injectable solution, medicine.drug_formulation.formulation_of, Pinus palustris pollen extract
Longleaf pine 40000 injectable solution, medicine.drug_formulation.active_ingredients, Pinus palustris pollen
Injectable solution, medicine.drug_dosage_form.formulations_available_in_this_form, Longleaf pine 20000 injectable solution
Longleaf pine 20000 injectable solution, medicine.drug_formulation.brand_names, Longleaf Pine
Longleaf pine 20000 injectable solution, medicine.drug_formulation.drug_category, Biologic
Pinus palustris pollen extract, medicine.drug.marketed_formulations, Longleaf pine 10000 injectable solution
Pinus Palustris Pollen Extract Subcutaneous, medicine.routed_drug.marketed_formulations, Longleaf pine 40000 injectable solution
Longleaf pine 20000 injectable solution, medicine.drug_formulation.formulation_of, Pinus palustris pollen extract
m.0hyfp2v, medicine.drug_strength.active_ingredient, Pinus palustris pollen
Longleaf pine 10000 injectable solution, medicine.drug_formulation.routed_drug, Pinus Palustris Pollen Extract Intradermal
Pinus palustris pollen, medicine.drug_ingredient.active_moiety_of_formulation, Longleaf pine 0.1 injectable solution
m.0hykqwh, medicine.drug_strength.drug_formulations, Longleaf pine 0.05 injectable solution
Biologic, medicine.drug_formulation_category.drug_formulations, Longleaf pine 20000 injectable solution
Pinus palustris pollen, medicine.drug_ingredient.active_ingredient_of_formulation, Longleaf pine 20000 injectable solution
Longleaf pine 0.1 injectable solution, medicine.drug_formulation.active_ingredients, Pinus palustris pollen
Longleaf pine 40000 injectable solution, medicine.drug_formulation.active_ingredient_moieties, Pinus palustris pollen
Longleaf pine 0.05 injectable solution, medicine.drug_formulation.routed_drug, Pinus Palustris Pollen Extract Subcutaneous
Subcutaneous injection, medicine.drug_administration_route.drug_formulations, Longleaf pine 10000 injectable solution
Pinus Palustris Pollen Extract Intradermal, medicine.routed_drug.marketed_formulations, Longleaf pine 0.05 injectable solution
Injectable solution, medicine.drug_dosage_form.formulations_available_in_this_form, Longleaf pine 40000 injectable solution
Longleaf pine 0.1 injectable solution, medicine.drug_formulation.strength, m.0hym6y_
Longleaf pine 20000 injectable solution, medicine.drug_formulation.legal_status, Prescription drug
Longleaf pine 0.05 injectable solution, medicine.drug_formulation.legal_status, Prescription drug
m.0hykqwh, medicine.drug_strength.strength_units, g/mL
Subcutaneous injection, medicine.drug_administration_route.drug_formulations, Longleaf pine 40000 injectable solution
Pinus palustris pollen, medicine.drug_ingredient.active_ingredient_of_formulation, Longleaf pine 0.1 injectable solution
Longleaf pine 0.05 injectable solution, medicine.drug_formulation.strength, m.0hykqwh
Longleaf pine 0.05 injectable solution, medicine.drug_formulation.manufactured_forms, Longleaf Pine 0.05 injectable solution
Longleaf pine 40000 injectable solution, medicine.drug_formulation.routed_drug, Pinus Palustris Pollen Extract Intradermal
Longleaf pine 0.1 injectable solution, medicine.drug_formulation.legal_status, Prescription drug
Longleaf pine 0.1 injectable solution, medicine.drug_formulation.dosage_form, Injectable solution
m.0hym6y_, medicine.drug_strength.strength_value, 0.1
Longleaf pine 10000 injectable solution, medicine.drug_formulation.drug_category, Biologic
Pinus Palustris Pollen Extract Subcutaneous, medicine.routed_drug.routed_drug_of, Pinus palustris pollen extract
Pinus palustris pollen, medicine.drug_ingredient.active_ingredient_of_formulation, Longleaf pine 10000 injectable solution
Longleaf pine 0.1 injectable solution, medicine.drug_formulation.drug_category, Biologic
Longleaf pine 0.1 injectable solution, medicine.drug_formulation.routes, Subcutaneous injection
Longleaf pine 40000 injectable solution, medicine.drug_formulation.routed_drug, Pinus Palustris Pollen Extract Subcutaneous
Longleaf pine 0.05 injectable solution, medicine.drug_formulation.routed_drug, Pinus Palustris Pollen Extract Intradermal
Longleaf pine 20000 injectable solution, medicine.drug_formulation.active_ingredients, Pinus palustris pollen
m.0hyj5lj, medicine.drug_strength.strength_units, [PNU]/mL
Pinus Palustris Pollen Extract Subcutaneous, medicine.routed_drug.marketed_formulations, Longleaf pine 10000 injectable solution
Intradermal, medicine.drug_administration_route.drug_formulations, Longleaf pine 40000 injectable solution
Longleaf pine 0.1 injectable solution, medicine.drug_formulation.routed_drug, Pinus Palustris Pollen Extract Subcutaneous
Longleaf pine 40000 injectable solution, medicine.drug_formulation.legal_status, Prescription drug
m.0hycqk6, medicine.drug_strength.active_ingredient, Pinus palustris pollen
m.0hykqwh, medicine.drug_strength.active_ingredient, Pinus palustris pollen
Longleaf pine 40000 injectable solution, medicine.drug_formulation.manufactured_forms, Longleaf Pine 40000 injectable solution
Longleaf pine 10000 injectable solution, medicine.drug_formulation.active_ingredients, Pinus palustris pollen
m.0hycqk6, medicine.drug_strength.strength_value, 20000.0
Pinus Palustris Pollen Extract Intradermal, medicine.routed_drug.routed_drug_of, Pinus palustris pollen extract
Longleaf pine 0.05 injectable solution, medicine.drug_formulation.routes, Subcutaneous injection
m.0hycqk6, medicine.drug_strength.drug_formulations, Longleaf pine 20000 injectable solution
Longleaf Pine 0.05 injectable solution, medicine.manufactured_drug_form.manufactured_form_of, Longleaf pine 0.05 injectable solution
Longleaf pine 0.1 injectable solution, medicine.drug_formulation.routed_drug, Pinus Palustris Pollen Extract Intradermal
Longleaf pine 20000 injectable solution, medicine.drug_formulation.routed_drug, Pinus Palustris Pollen Extract Subcutaneous
Longleaf pine 20000 injectable solution, medicine.drug_formulation.manufactured_forms, Longleaf Pine 20000 injectable solution
Pinus palustris pollen extract, medicine.drug.routed_drugs, Pinus Palustris Pollen Extract Subcutaneous
Longleaf pine 20000 injectable solution, medicine.drug_formulation.routed_drug, Pinus Palustris Pollen Extract Intradermal
Longleaf pine 10000 injectable solution, medicine.drug_formulation.strength, m.0hyfp2v
Pinus palustris pollen extract, medicine.drug.marketed_formulations, Longleaf pine 0.1 injectable solution
m.0hyfp2v, medicine.drug_strength.strength_units, [PNU]/mL
Pinus palustris pollen, medicine.drug_ingredient.active_moiety_of_formulation, Longleaf pine 0.05 injectable solution
Subcutaneous injection, medicine.drug_administration_route.drug_formulations, Longleaf pine 0.05 injectable solution
Longleaf pine 40000 injectable solution, medicine.drug_formulation.routes, Subcutaneous injection
Longleaf Pine 0.1 injectable solution, medicine.manufactured_drug_form.manufactured_form_of, Longleaf pine 0.1 injectable solution
m.0hyfp2v, medicine.drug_strength.drug_formulations, Longleaf pine 10000 injectable solution
Pinus palustris pollen, medicine.drug_ingredient.active_moiety_of_drug, Pinus palustris pollen extract
Pinus Palustris Pollen Extract Subcutaneous, medicine.routed_drug.marketed_formulations, Longleaf pine 20000 injectable solution
Longleaf Pine 10000 injectable solution, medicine.manufactured_drug_form.manufactured_form_of, Longleaf pine 10000 injectable solution
Injectable solution, medicine.drug_dosage_form.formulations_available_in_this_form, Longleaf pine 10000 injectable solution
Pinus Palustris Pollen Extract Subcutaneous, medicine.routed_drug.marketed_formulations, Longleaf pine 0.1 injectable solution
Longleaf pine 10000 injectable solution, medicine.drug_formulation.manufactured_forms, Longleaf Pine 10000 injectable solution
Intradermal, medicine.drug_administration_route.drug_formulations, Longleaf pine 10000 injectable solution
Longleaf pine 10000 injectable solution, medicine.drug_formulation.legal_status, Prescription drug
m.0hykqwh, medicine.drug_strength.strength_value, 0.05
Biologic, medicine.drug_formulation_category.drug_formulations, Longleaf pine 40000 injectable solution
Longleaf pine 0.05 injectable solution, medicine.drug_formulation.drug_category, Biologic
Pinus palustris pollen extract, medicine.drug.marketed_formulations, Longleaf pine 20000 injectable solution
Biologic, medicine.drug_formulation_category.drug_formulations, Longleaf pine 0.1 injectable solution
Longleaf pine 20000 injectable solution, medicine.drug_formulation.active_ingredient_moieties, Pinus palustris pollen
Pinus Palustris Pollen Extract Intradermal, medicine.routed_drug.marketed_formulations, Longleaf pine 20000 injectable solution
Pinus palustris pollen, medicine.drug_ingredient.active_moiety_of_formulation, Longleaf pine 40000 injectable solution
Longleaf pine 0.05 injectable solution, medicine.drug_formulation.routes, Intradermal
Longleaf pine 10000 injectable solution, medicine.drug_formulation.routes, Intradermal
m.0hym6y_, medicine.drug_strength.active_ingredient, Pinus palustris pollen
Longleaf pine 0.05 injectable solution, medicine.drug_formulation.active_ingredient_moieties, Pinus palustris pollen
m.0hyfp2v, medicine.drug_strength.strength_value, 10000.0
Longleaf pine 10000 injectable solution, medicine.drug_formulation.active_ingredient_moieties, Pinus palustris pollen
m.0hym6y_, medicine.drug_strength.drug_formulations, Longleaf pine 0.1 injectable solution
Longleaf pine 10000 injectable solution, medicine.drug_formulation.routed_drug, Pinus Palustris Pollen Extract Subcutaneous
Longleaf pine 40000 injectable solution, medicine.drug_formulation.routes, Intradermal
m.0hyj5lj, medicine.drug_strength.drug_formulations, Longleaf pine 40000 injectable solution
Longleaf pine 20000 injectable solution, medicine.drug_formulation.strength, m.0hycqk6
Pinus palustris pollen, medicine.drug_ingredient.active_moiety_of_formulation, Longleaf pine 20000 injectable solution
Longleaf pine 0.05 injectable solution, medicine.drug_formulation.formulation_of, Pinus palustris pollen extract
Longleaf pine 20000 injectable solution, medicine.drug_formulation.routes, Intradermal
Longleaf pine 40000 injectable solution, medicine.drug_formulation.brand_names, Longleaf Pine
m.0hyj5lj, medicine.drug_strength.strength_value, 40000.0
Longleaf pine 10000 injectable solution, medicine.drug_formulation.brand_names, Longleaf Pine
Intradermal, medicine.drug_administration_route.drug_formulations, Longleaf pine 20000 injectable solution
Pinus palustris pollen, medicine.drug_ingredient.active_ingredient_of_formulation, Longleaf pine 0.05 injectable solution
Pinus Palustris Pollen Extract Subcutaneous, medicine.routed_drug.marketed_formulations, Longleaf pine 0.05 injectable solution
Longleaf pine 0.05 injectable solution, medicine.drug_formulation.dosage_form, Injectable solution
Subcutaneous injection, medicine.drug_administration_route.drug_formulations, Longleaf pine 0.1 injectable solution
Longleaf pine 20000 injectable solution, medicine.drug_formulation.routes, Subcutaneous injection
Longleaf pine 10000 injectable solution, medicine.drug_formulation.formulation_of, Pinus palustris pollen extract

Answer: Prescription drug